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Subject[patch 7/10] s390: crypto driver update.
[patch 7/10] s390: crypto driver update.

From: Eric Rossman <edrossma@us.ibm.com>

crypto device driver update:
- Suppress syslog messages for some return codes.
- Fix incorrect bounds checking in /proc interface.
- Remove hotplug calls.
- Remove linux version checks.
- Remove device workqueue on module unload.

Signed-off-by: Eric Rossman <edrossma@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diffstat:
drivers/s390/crypto/z90common.h | 3
drivers/s390/crypto/z90hardware.c | 127 +++++++++----------
drivers/s390/crypto/z90main.c | 246 ++++++--------------------------------
3 files changed, 106 insertions(+), 270 deletions(-)

diff -urpN linux-2.6/drivers/s390/crypto/z90common.h linux-2.6-patched/drivers/s390/crypto/z90common.h
--- linux-2.6/drivers/s390/crypto/z90common.h 2005-08-29 01:41:01.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/z90common.h 2005-08-29 19:18:10.000000000 +0200
@@ -27,7 +27,7 @@
#ifndef _Z90COMMON_H_
#define _Z90COMMON_H_

-#define VERSION_Z90COMMON_H "$Revision: 1.16 $"
+#define VERSION_Z90COMMON_H "$Revision: 1.17 $"


#define RESPBUFFSIZE 256
@@ -164,5 +164,4 @@ struct CPRBX {
#define UMIN(a,b) ((a) < (b) ? (a) : (b))
#define IS_EVEN(x) ((x) == (2 * ((x) / 2)))

-
#endif
diff -urpN linux-2.6/drivers/s390/crypto/z90hardware.c linux-2.6-patched/drivers/s390/crypto/z90hardware.c
--- linux-2.6/drivers/s390/crypto/z90hardware.c 2005-08-29 01:41:01.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/z90hardware.c 2005-08-29 19:18:10.000000000 +0200
@@ -32,7 +32,7 @@
#include "z90crypt.h"
#include "z90common.h"

-#define VERSION_Z90HARDWARE_C "$Revision: 1.33 $"
+#define VERSION_Z90HARDWARE_C "$Revision: 1.34 $"

char z90hardware_version[] __initdata =
"z90hardware.o (" VERSION_Z90HARDWARE_C "/"
@@ -283,48 +283,6 @@ struct type6_msg {
struct CPRB CPRB;
};

-union request_msg {
- union type4_msg t4msg;
- struct type6_msg t6msg;
-};
-
-struct request_msg_ext {
- int q_nr;
- unsigned char *psmid;
- union request_msg reqMsg;
-};
-
-struct type82_hdr {
- unsigned char reserved1;
- unsigned char type;
- unsigned char reserved2[2];
- unsigned char reply_code;
- unsigned char reserved3[3];
-};
-
-#define TYPE82_RSP_CODE 0x82
-
-#define REPLY_ERROR_MACHINE_FAILURE 0x10
-#define REPLY_ERROR_PREEMPT_FAILURE 0x12
-#define REPLY_ERROR_CHECKPT_FAILURE 0x14
-#define REPLY_ERROR_MESSAGE_TYPE 0x20
-#define REPLY_ERROR_INVALID_COMM_CD 0x21
-#define REPLY_ERROR_INVALID_MSG_LEN 0x23
-#define REPLY_ERROR_RESERVD_FIELD 0x24
-#define REPLY_ERROR_FORMAT_FIELD 0x29
-#define REPLY_ERROR_INVALID_COMMAND 0x30
-#define REPLY_ERROR_MALFORMED_MSG 0x40
-#define REPLY_ERROR_RESERVED_FIELDO 0x50
-#define REPLY_ERROR_WORD_ALIGNMENT 0x60
-#define REPLY_ERROR_MESSAGE_LENGTH 0x80
-#define REPLY_ERROR_OPERAND_INVALID 0x82
-#define REPLY_ERROR_OPERAND_SIZE 0x84
-#define REPLY_ERROR_EVEN_MOD_IN_OPND 0x85
-#define REPLY_ERROR_RESERVED_FIELD 0x88
-#define REPLY_ERROR_TRANSPORT_FAIL 0x90
-#define REPLY_ERROR_PACKET_TRUNCATED 0xA0
-#define REPLY_ERROR_ZERO_BUFFER_LEN 0xB0
-
struct type86_hdr {
unsigned char reserved1;
unsigned char type;
@@ -338,7 +296,7 @@ struct type86_hdr {
#define TYPE86_FMT2 0x02

struct type86_fmt2_msg {
- struct type86_hdr hdr;
+ struct type86_hdr header;
unsigned char reserved[4];
unsigned char apfs[4];
unsigned int count1;
@@ -538,6 +496,8 @@ static struct function_and_rules_block s
{'M','R','P',' ',' ',' ',' ',' '}
};

+static unsigned char static_PKE_function_code[2] = {0x50, 0x4B};
+
struct T6_keyBlock_hdrX {
unsigned short blen;
unsigned short ulen;
@@ -688,9 +648,38 @@ static struct cca_public_sec static_cca_
#define RESPONSE_CPRB_SIZE 0x000006B8
#define RESPONSE_CPRBX_SIZE 0x00000724

-#define CALLER_HEADER 12
+struct error_hdr {
+ unsigned char reserved1;
+ unsigned char type;
+ unsigned char reserved2[2];
+ unsigned char reply_code;
+ unsigned char reserved3[3];
+};

-static unsigned char static_PKE_function_code[2] = {0x50, 0x4B};
+#define TYPE82_RSP_CODE 0x82
+
+#define REP82_ERROR_MACHINE_FAILURE 0x10
+#define REP82_ERROR_PREEMPT_FAILURE 0x12
+#define REP82_ERROR_CHECKPT_FAILURE 0x14
+#define REP82_ERROR_MESSAGE_TYPE 0x20
+#define REP82_ERROR_INVALID_COMM_CD 0x21
+#define REP82_ERROR_INVALID_MSG_LEN 0x23
+#define REP82_ERROR_RESERVD_FIELD 0x24
+#define REP82_ERROR_FORMAT_FIELD 0x29
+#define REP82_ERROR_INVALID_COMMAND 0x30
+#define REP82_ERROR_MALFORMED_MSG 0x40
+#define REP82_ERROR_RESERVED_FIELDO 0x50
+#define REP82_ERROR_WORD_ALIGNMENT 0x60
+#define REP82_ERROR_MESSAGE_LENGTH 0x80
+#define REP82_ERROR_OPERAND_INVALID 0x82
+#define REP82_ERROR_OPERAND_SIZE 0x84
+#define REP82_ERROR_EVEN_MOD_IN_OPND 0x85
+#define REP82_ERROR_RESERVED_FIELD 0x88
+#define REP82_ERROR_TRANSPORT_FAIL 0x90
+#define REP82_ERROR_PACKET_TRUNCATED 0xA0
+#define REP82_ERROR_ZERO_BUFFER_LEN 0xB0
+
+#define CALLER_HEADER 12

static inline int
testq(int q_nr, int *q_depth, int *dev_type, struct ap_status_word *stat)
@@ -1212,9 +1201,9 @@ send_to_AP(int dev_nr, int cdx, int msg_
struct ap_status_word stat_word;
enum devstat stat;
int ccode;
+ u32 *q_nr_p = (u32 *)msg_ext;

- ((struct request_msg_ext *) msg_ext)->q_nr =
- (dev_nr << SKIP_BITL) + cdx;
+ *q_nr_p = (dev_nr << SKIP_BITL) + cdx;
PDEBUG("msg_len passed to sen: %d\n", msg_len);
PDEBUG("q number passed to sen: %02x%02x%02x%02x\n",
msg_ext[0], msg_ext[1], msg_ext[2], msg_ext[3]);
@@ -2104,7 +2093,7 @@ convert_response(unsigned char *response
int *respbufflen_p, unsigned char *resp_buff)
{
struct ica_rsa_modexpo *icaMsg_p = (struct ica_rsa_modexpo *) buffer;
- struct type82_hdr *t82h_p = (struct type82_hdr *) response;
+ struct error_hdr *errh_p = (struct error_hdr *) response;
struct type84_hdr *t84h_p = (struct type84_hdr *) response;
struct type86_fmt2_msg *t86m_p = (struct type86_fmt2_msg *) response;
int reply_code, service_rc, service_rs, src_l;
@@ -2117,12 +2106,13 @@ convert_response(unsigned char *response
service_rc = 0;
service_rs = 0;
src_l = 0;
- switch (t82h_p->type) {
+ switch (errh_p->type) {
case TYPE82_RSP_CODE:
- reply_code = t82h_p->reply_code;
- src_p = (unsigned char *)t82h_p;
- PRINTK("Hardware error: Type 82 Message Header: "
+ reply_code = errh_p->reply_code;
+ src_p = (unsigned char *)errh_p;
+ PRINTK("Hardware error: Type %02X Message Header: "
"%02x%02x%02x%02x%02x%02x%02x%02x\n",
+ errh_p->type,
src_p[0], src_p[1], src_p[2], src_p[3],
src_p[4], src_p[5], src_p[6], src_p[7]);
break;
@@ -2131,7 +2121,7 @@ convert_response(unsigned char *response
src_p = response + (int)t84h_p->len - src_l;
break;
case TYPE86_RSP_CODE:
- reply_code = t86m_p->hdr.reply_code;
+ reply_code = t86m_p->header.reply_code;
if (reply_code != 0)
break;
cprb_p = (struct CPRB *)
@@ -2143,6 +2133,9 @@ convert_response(unsigned char *response
le2toI(cprb_p->ccp_rscode, &service_rs);
if ((service_rc == 8) && (service_rs == 66))
PDEBUG("Bad block format on PCICC\n");
+ else if ((service_rc == 8) && (service_rs == 65))
+ PDEBUG("Probably an even modulus on "
+ "PCICC\n");
else if ((service_rc == 8) && (service_rs == 770)) {
PDEBUG("Invalid key length on PCICC\n");
unset_ext_bitlens();
@@ -2155,7 +2148,7 @@ convert_response(unsigned char *response
return REC_USE_PCICA;
}
else
- PRINTK("service rc/rs: %d/%d\n",
+ PRINTK("service rc/rs (PCICC): %d/%d\n",
service_rc, service_rs);
return REC_OPERAND_INV;
}
@@ -2169,7 +2162,10 @@ convert_response(unsigned char *response
if (service_rc != 0) {
service_rs = (int) cprbx_p->ccp_rscode;
if ((service_rc == 8) && (service_rs == 66))
- PDEBUG("Bad block format on PCXICC\n");
+ PDEBUG("Bad block format on PCIXCC\n");
+ else if ((service_rc == 8) && (service_rs == 65))
+ PDEBUG("Probably an even modulus on "
+ "PCIXCC\n");
else if ((service_rc == 8) && (service_rs == 770)) {
PDEBUG("Invalid key length on PCIXCC\n");
unset_ext_bitlens();
@@ -2182,7 +2178,7 @@ convert_response(unsigned char *response
return REC_USE_PCICA;
}
else
- PRINTK("service rc/rs: %d/%d\n",
+ PRINTK("service rc/rs (PCIXCC): %d/%d\n",
service_rc, service_rs);
return REC_OPERAND_INV;
}
@@ -2195,20 +2191,25 @@ convert_response(unsigned char *response
}
break;
default:
+ src_p = (unsigned char *)errh_p;
+ PRINTK("Unrecognized Message Header: "
+ "%02x%02x%02x%02x%02x%02x%02x%02x\n",
+ src_p[0], src_p[1], src_p[2], src_p[3],
+ src_p[4], src_p[5], src_p[6], src_p[7]);
return REC_BAD_MESSAGE;
}

if (reply_code)
switch (reply_code) {
- case REPLY_ERROR_OPERAND_INVALID:
+ case REP82_ERROR_OPERAND_INVALID:
return REC_OPERAND_INV;
- case REPLY_ERROR_OPERAND_SIZE:
+ case REP82_ERROR_OPERAND_SIZE:
return REC_OPERAND_SIZE;
- case REPLY_ERROR_EVEN_MOD_IN_OPND:
+ case REP82_ERROR_EVEN_MOD_IN_OPND:
return REC_EVEN_MOD;
- case REPLY_ERROR_MESSAGE_TYPE:
+ case REP82_ERROR_MESSAGE_TYPE:
return WRONG_DEVICE_TYPE;
- case REPLY_ERROR_TRANSPORT_FAIL:
+ case REP82_ERROR_TRANSPORT_FAIL:
PRINTKW("Transport failed (APFS = %02X%02X%02X%02X)\n",
t86m_p->apfs[0], t86m_p->apfs[1],
t86m_p->apfs[2], t86m_p->apfs[3]);
@@ -2229,7 +2230,7 @@ convert_response(unsigned char *response
PDEBUG("Length returned = %d\n", src_l);
tgt_p = resp_buff + icaMsg_p->outputdatalength - src_l;
memcpy(tgt_p, src_p, src_l);
- if ((t82h_p->type == TYPE86_RSP_CODE) && (resp_buff < tgt_p)) {
+ if ((errh_p->type == TYPE86_RSP_CODE) && (resp_buff < tgt_p)) {
memset(resp_buff, 0, icaMsg_p->outputdatalength - src_l);
if (pad_msg(resp_buff, icaMsg_p->outputdatalength, src_l))
return REC_INVALID_PAD;
diff -urpN linux-2.6/drivers/s390/crypto/z90main.c linux-2.6-patched/drivers/s390/crypto/z90main.c
--- linux-2.6/drivers/s390/crypto/z90main.c 2005-08-29 01:41:01.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/z90main.c 2005-08-29 19:18:10.000000000 +0200
@@ -31,6 +31,7 @@
#include <linux/init.h>
#include <linux/interrupt.h> // for tasklets
#include <linux/ioctl32.h>
+#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kobject_uevent.h>
@@ -39,19 +40,8 @@
#include <linux/version.h>
#include "z90crypt.h"
#include "z90common.h"
-#ifndef Z90CRYPT_USE_HOTPLUG
-#include <linux/miscdevice.h>
-#endif
-
-#define VERSION_CODE(vers, rel, seq) (((vers)<<16) | ((rel)<<8) | (seq))
-#if LINUX_VERSION_CODE < VERSION_CODE(2,4,0) /* version < 2.4 */
-# error "This kernel is too old: not supported"
-#endif
-#if LINUX_VERSION_CODE > VERSION_CODE(2,7,0) /* version > 2.6 */
-# error "This kernel is too recent: not supported by this file"
-#endif

-#define VERSION_Z90MAIN_C "$Revision: 1.57 $"
+#define VERSION_Z90MAIN_C "$Revision: 1.62 $"

static char z90main_version[] __initdata =
"z90main.o (" VERSION_Z90MAIN_C "/"
@@ -63,21 +53,12 @@ extern char z90hardware_version[];
* Defaults that may be modified.
*/

-#ifndef Z90CRYPT_USE_HOTPLUG
/**
* You can specify a different minor at compile time.
*/
#ifndef Z90CRYPT_MINOR
#define Z90CRYPT_MINOR MISC_DYNAMIC_MINOR
#endif
-#else
-/**
- * You can specify a different major at compile time.
- */
-#ifndef Z90CRYPT_MAJOR
-#define Z90CRYPT_MAJOR 0
-#endif
-#endif

/**
* You can specify a different domain at compile time or on the insmod
@@ -97,7 +78,7 @@ extern char z90hardware_version[];
* older than CLEANUPTIME seconds in the past.
*/
#ifndef CLEANUPTIME
-#define CLEANUPTIME 20
+#define CLEANUPTIME 15
#endif

/**
@@ -298,6 +279,10 @@ struct z90crypt {
* it contains the request; at READ, the response. The function
* send_to_crypto_device converts the request to device-dependent
* form and use the caller's OPEN-allocated buffer for the response.
+ *
+ * For the contents of caller_dev_dep_req and caller_dev_dep_req_p
+ * because that points to it, see the discussion in z90hardware.c.
+ * Search for "extended request message block".
*/
struct caller {
int caller_buf_l; // length of original request
@@ -398,24 +383,9 @@ static int z90crypt_status_write(struct
unsigned long, void *);

/**
- * Hotplug support
- */
-
-#ifdef Z90CRYPT_USE_HOTPLUG
-#define Z90CRYPT_HOTPLUG_ADD 1
-#define Z90CRYPT_HOTPLUG_REMOVE 2
-
-static void z90crypt_hotplug_event(int, int, int);
-#endif
-
-/**
* Storage allocated at initialization and used throughout the life of
* this insmod
*/
-#ifdef Z90CRYPT_USE_HOTPLUG
-static int z90crypt_major = Z90CRYPT_MAJOR;
-#endif
-
static int domain = DOMAIN_INDEX;
static struct z90crypt z90crypt;
static int quiesce_z90crypt;
@@ -444,14 +414,12 @@ static struct file_operations z90crypt_f
.release = z90crypt_release
};

-#ifndef Z90CRYPT_USE_HOTPLUG
static struct miscdevice z90crypt_misc_device = {
.minor = Z90CRYPT_MINOR,
.name = DEV_NAME,
.fops = &z90crypt_fops,
.devfs_name = DEV_NAME
};
-#endif

/**
* Documentation values.
@@ -603,7 +571,6 @@ z90crypt_init_module(void)
return -EINVAL;
}

-#ifndef Z90CRYPT_USE_HOTPLUG
/* Register as misc device with given minor (or get a dynamic one). */
result = misc_register(&z90crypt_misc_device);
if (result < 0) {
@@ -611,18 +578,6 @@ z90crypt_init_module(void)
z90crypt_misc_device.minor, result);
return result;
}
-#else
- /* Register the major (or get a dynamic one). */
- result = register_chrdev(z90crypt_major, REG_NAME, &z90crypt_fops);
- if (result < 0) {
- PRINTKW("register_chrdev (major %d) failed with %d.\n",
- z90crypt_major, result);
- return result;
- }
-
- if (z90crypt_major == 0)
- z90crypt_major = result;
-#endif

PDEBUG("Registered " DEV_NAME " with result %d\n", result);

@@ -645,11 +600,6 @@ z90crypt_init_module(void)
} else
PRINTK("No devices at startup\n");

-#ifdef Z90CRYPT_USE_HOTPLUG
- /* generate hotplug event for device node generation */
- z90crypt_hotplug_event(z90crypt_major, 0, Z90CRYPT_HOTPLUG_ADD);
-#endif
-
/* Initialize globals. */
spin_lock_init(&queuespinlock);

@@ -701,17 +651,10 @@ z90crypt_init_module(void)
return 0; // success

init_module_cleanup:
-#ifndef Z90CRYPT_USE_HOTPLUG
if ((nresult = misc_deregister(&z90crypt_misc_device)))
PRINTK("misc_deregister failed with %d.\n", nresult);
else
PDEBUG("misc_deregister successful.\n");
-#else
- if ((nresult = unregister_chrdev(z90crypt_major, REG_NAME)))
- PRINTK("unregister_chrdev failed with %d.\n", nresult);
- else
- PDEBUG("unregister_chrdev successful.\n");
-#endif

return result; // failure
}
@@ -728,19 +671,10 @@ z90crypt_cleanup_module(void)

remove_proc_entry("driver/z90crypt", 0);

-#ifndef Z90CRYPT_USE_HOTPLUG
if ((nresult = misc_deregister(&z90crypt_misc_device)))
PRINTK("misc_deregister failed with %d.\n", nresult);
else
PDEBUG("misc_deregister successful.\n");
-#else
- z90crypt_hotplug_event(z90crypt_major, 0, Z90CRYPT_HOTPLUG_REMOVE);
-
- if ((nresult = unregister_chrdev(z90crypt_major, REG_NAME)))
- PRINTK("unregister_chrdev failed with %d.\n", nresult);
- else
- PDEBUG("unregister_chrdev successful.\n");
-#endif

/* Remove the tasks */
tasklet_kill(&reader_tasklet);
@@ -748,6 +682,9 @@ z90crypt_cleanup_module(void)
del_timer(&config_timer);
del_timer(&cleanup_timer);

+ if (z90_device_work)
+ destroy_workqueue(z90_device_work);
+
destroy_z90crypt();

PRINTKN("Unloaded.\n");
@@ -766,8 +703,6 @@ z90crypt_cleanup_module(void)
* z90crypt_status_write
* disable_card
* enable_card
- * scan_char
- * scan_string
*
* Helper functions:
* z90crypt_rsa
@@ -1057,9 +992,10 @@ remove_device(struct device *device_p)
* The MCL must be applied and the newer bitlengths enabled for these to work.
*
* Card Type Old limit New limit
+ * PCICA ??-2048 same (the lower limit is less than 128 bit...)
* PCICC 512-1024 512-2048
- * PCIXCC_MCL2 512-2048 no change (applying this MCL == card is MCL3+)
- * PCIXCC_MCL3 512-2048 128-2048
+ * PCIXCC_MCL2 512-2048 ----- (applying any GA LIC will make an MCL3 card)
+ * PCIXCC_MCL3 ----- 128-2048
* CEX2C 512-2048 128-2048
*
* ext_bitlens (extended bitlengths) is a global, since you should not apply an
@@ -1104,7 +1040,7 @@ select_device_type(int *dev_type_p, int
if (PCICA_avail || PCIXCC_MCL3_avail || CEX2C_avail) {
/**
* bitlength is a factor, PCICA is the most capable, even with
- * the new MCL.
+ * the new MCL for PCIXCC.
*/
if ((bytelength < PCIXCC_MIN_MOD_SIZE) ||
(!ext_bitlens && (bytelength < OLD_PCIXCC_MIN_MOD_SIZE))) {
@@ -2144,73 +2080,15 @@ enable_card(int card_index)
z90crypt.hdware_info->type_mask[devp->dev_type].user_disabled_count--;
}

-static inline int
-scan_char(unsigned char *bf, unsigned int len,
- unsigned int *offs, unsigned int *p_eof, unsigned char c)
-{
- unsigned int i, found;
-
- found = 0;
- for (i = 0; i < len; i++) {
- if (bf[i] == c) {
- found = 1;
- break;
- }
- if (bf[i] == '\0') {
- *p_eof = 1;
- break;
- }
- if (bf[i] == '\n') {
- break;
- }
- }
- *offs = i+1;
- return found;
-}
-
-static inline int
-scan_string(unsigned char *bf, unsigned int len,
- unsigned int *offs, unsigned int *p_eof, unsigned char *s)
-{
- unsigned int temp_len, temp_offs, found, eof;
-
- temp_len = temp_offs = found = eof = 0;
- while (!eof && !found) {
- found = scan_char(bf+temp_len, len-temp_len,
- &temp_offs, &eof, *s);
-
- temp_len += temp_offs;
- if (eof) {
- found = 0;
- break;
- }
-
- if (found) {
- if (len >= temp_offs+strlen(s)) {
- found = !strncmp(bf+temp_len-1, s, strlen(s));
- if (found) {
- *offs = temp_len+strlen(s)-1;
- break;
- }
- } else {
- found = 0;
- *p_eof = 1;
- break;
- }
- }
- }
- return found;
-}
-
static int
z90crypt_status_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
- int i, j, len, offs, found, eof;
- unsigned char *lbuf;
+ int j, eol;
+ unsigned char *lbuf, *ptr;
unsigned int local_count;

-#define LBUFSIZE 600
+#define LBUFSIZE 1200
lbuf = kmalloc(LBUFSIZE, GFP_KERNEL);
if (!lbuf) {
PRINTK("kmalloc failed!\n");
@@ -2227,49 +2105,46 @@ z90crypt_status_write(struct file *file,
return -EFAULT;
}

- lbuf[local_count-1] = '\0';
+ lbuf[local_count] = '\0';

- len = 0;
- eof = 0;
- found = 0;
- while (!eof) {
- found = scan_string(lbuf+len, local_count-len, &offs, &eof,
- "Online devices");
- len += offs;
- if (found == 1)
- break;
+ ptr = strstr(lbuf, "Online devices");
+ if (ptr == 0) {
+ PRINTK("Unable to parse data (missing \"Online devices\")\n");
+ kfree(lbuf);
+ return count;
}

- if (eof) {
+ ptr = strstr(ptr, "\n");
+ if (ptr == 0) {
+ PRINTK("Unable to parse data (missing newline after \"Online devices\")\n");
kfree(lbuf);
return count;
}
+ ptr++;

- if (found)
- found = scan_char(lbuf+len, local_count-len, &offs, &eof, '\n');
-
- if (!found || eof) {
+ if (strstr(ptr, "Waiting work element counts") == NULL) {
+ PRINTK("Unable to parse data (missing \"Waiting work element counts\")\n");
kfree(lbuf);
return count;
}

- len += offs;
j = 0;
- for (i = 0; i < 80; i++) {
- switch (*(lbuf+len+i)) {
+ eol = 0;
+ while ((j < 64) && (*ptr != '\0')) {
+ switch (*ptr) {
case '\t':
case ' ':
break;
case '\n':
default:
- eof = 1;
+ eol = 1;
break;
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
+ case '0': // no device
+ case '1': // PCICA
+ case '2': // PCICC
+ case '3': // PCIXCC_MCL2
+ case '4': // PCIXCC_MCL3
+ case '5': // CEX2C
j++;
break;
case 'd':
@@ -2283,8 +2158,9 @@ z90crypt_status_write(struct file *file,
j++;
break;
}
- if (eof)
+ if (eol)
break;
+ ptr++;
}

kfree(lbuf);
@@ -3479,45 +3355,5 @@ probe_PCIXCC_type(struct device *devPtr)
return rv;
}

-#ifdef Z90CRYPT_USE_HOTPLUG
-static void
-z90crypt_hotplug_event(int dev_major, int dev_minor, int action)
-{
-#ifdef CONFIG_HOTPLUG
- char *argv[3];
- char *envp[6];
- char major[20];
- char minor[20];
-
- sprintf(major, "MAJOR=%d", dev_major);
- sprintf(minor, "MINOR=%d", dev_minor);
-
- argv[0] = hotplug_path;
- argv[1] = "z90crypt";
- argv[2] = 0;
-
- envp[0] = "HOME=/";
- envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
-
- switch (action) {
- case Z90CRYPT_HOTPLUG_ADD:
- envp[2] = "ACTION=add";
- break;
- case Z90CRYPT_HOTPLUG_REMOVE:
- envp[2] = "ACTION=remove";
- break;
- default:
- BUG();
- break;
- }
- envp[3] = major;
- envp[4] = minor;
- envp[5] = 0;
-
- call_usermodehelper(argv[0], argv, envp, 0);
-#endif
-}
-#endif
-
module_init(z90crypt_init_module);
module_exit(z90crypt_cleanup_module);
-
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