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Subject[PATCH 2/2] NTB: Fix Sparse Warnings
Date
Address the sparse warnings and resulting fallout

Signed-off-by: Jon Mason <jon.mason@intel.com>
---
drivers/ntb/ntb_hw.c | 4 ++--
drivers/ntb/ntb_hw.h | 4 ++--
drivers/ntb/ntb_transport.c | 32 ++++++++++++++++----------------
3 files changed, 20 insertions(+), 20 deletions(-)
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c
index 6d8e937..f802e7c 100644
--- a/drivers/ntb/ntb_hw.c
+++ b/drivers/ntb/ntb_hw.c
@@ -104,7 +104,7 @@ MODULE_DEVICE_TABLE(pci, ntb_pci_tbl);
* RETURNS: An appropriate -ERRNO error value on error, or zero for success.
*/
int ntb_register_event_callback(struct ntb_device *ndev,
- void (*func)(void *handle, unsigned int event))
+ void (*func)(void *handle, enum ntb_hw_event event))
{
if (ndev->event_cb)
return -EINVAL;
@@ -343,7 +343,7 @@ int ntb_read_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 *val)
*
* RETURNS: pointer to virtual address, or NULL on error.
*/
-void *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw)
+void __iomem *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw)
{
if (mw > NTB_NUM_MW)
return NULL;
diff --git a/drivers/ntb/ntb_hw.h b/drivers/ntb/ntb_hw.h
index 5e00951..3a3038c 100644
--- a/drivers/ntb/ntb_hw.h
+++ b/drivers/ntb/ntb_hw.h
@@ -165,14 +165,14 @@ int ntb_register_db_callback(struct ntb_device *ndev, unsigned int idx,
void ntb_unregister_db_callback(struct ntb_device *ndev, unsigned int idx);
int ntb_register_event_callback(struct ntb_device *ndev,
void (*event_cb_func) (void *handle,
- unsigned int event));
+ enum ntb_hw_event event));
void ntb_unregister_event_callback(struct ntb_device *ndev);
int ntb_get_max_spads(struct ntb_device *ndev);
int ntb_write_local_spad(struct ntb_device *ndev, unsigned int idx, u32 val);
int ntb_read_local_spad(struct ntb_device *ndev, unsigned int idx, u32 *val);
int ntb_write_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 val);
int ntb_read_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 *val);
-void *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw);
+void __iomem *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw);
resource_size_t ntb_get_mw_size(struct ntb_device *ndev, unsigned int mw);
void ntb_ring_sdb(struct ntb_device *ndev, unsigned int idx);
void *ntb_find_transport(struct pci_dev *pdev);
diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c
index b3afb24..e0bdfd7 100644
--- a/drivers/ntb/ntb_transport.c
+++ b/drivers/ntb/ntb_transport.c
@@ -58,7 +58,7 @@
#include <linux/ntb.h>
#include "ntb_hw.h"

-#define NTB_TRANSPORT_VERSION 1
+#define NTB_TRANSPORT_VERSION 2

static unsigned int transport_mtu = 0x401E;
module_param(transport_mtu, uint, 0644);
@@ -91,14 +91,14 @@ struct ntb_transport_qp {
bool qp_link;
u8 qp_num; /* Only 64 QP's are allowed. 0-63 */

- struct ntb_rx_info *rx_info;
+ struct ntb_rx_info __iomem *rx_info;
struct ntb_rx_info *remote_rx_info;

void (*tx_handler) (struct ntb_transport_qp *qp, void *qp_data,
void *data, int len);
struct list_head tx_free_q;
spinlock_t ntb_tx_free_q_lock;
- void *tx_mw;
+ void __iomem *tx_mw;
unsigned int tx_index;
unsigned int tx_max_entry;
unsigned int tx_max_frame;
@@ -166,7 +166,7 @@ enum {
};

struct ntb_payload_header {
- u64 ver;
+ unsigned int ver;
unsigned int len;
unsigned int flags;
};
@@ -474,7 +474,7 @@ static void ntb_transport_setup_qp_mw(struct ntb_transport *nt,
u8 mw_num = QP_TO_MW(qp_num);
unsigned int i;

- WARN_ON(nt->mw[mw_num].virt_addr == 0);
+ WARN_ON(nt->mw[mw_num].virt_addr == NULL);

if (nt->max_qps % NTB_NUM_MW && mw_num < nt->max_qps % NTB_NUM_MW)
num_qps_mw = nt->max_qps / NTB_NUM_MW + 1;
@@ -933,7 +933,7 @@ static int ntb_process_rxc(struct ntb_transport_qp *qp)
entry = ntb_list_rm(&qp->ntb_rx_pend_q_lock, &qp->rx_pend_q);
if (!entry) {
dev_dbg(&ntb_query_pdev(qp->ndev)->dev,
- "no buffer - HDR ver %llu, len %d, flags %x\n",
+ "no buffer - HDR ver %u, len %d, flags %x\n",
hdr->ver, hdr->len, hdr->flags);
qp->rx_err_no_buf++;
return -ENOMEM;
@@ -946,9 +946,9 @@ static int ntb_process_rxc(struct ntb_transport_qp *qp)
return -EAGAIN;
}

- if (hdr->ver != qp->rx_pkts) {
+ if (hdr->ver != (u32) qp->rx_pkts) {
dev_dbg(&ntb_query_pdev(qp->ndev)->dev,
- "qp %d: version mismatch, expected %llu - got %llu\n",
+ "qp %d: version mismatch, expected %llu - got %u\n",
qp->qp_num, qp->rx_pkts, hdr->ver);
ntb_list_add(&qp->ntb_rx_pend_q_lock, &entry->entry,
&qp->rx_pend_q);
@@ -965,7 +965,7 @@ static int ntb_process_rxc(struct ntb_transport_qp *qp)
}

dev_dbg(&ntb_query_pdev(qp->ndev)->dev,
- "rx offset %u, ver %llu - %d payload received, buf size %d\n",
+ "rx offset %u, ver %u - %d payload received, buf size %d\n",
qp->rx_index, hdr->ver, hdr->len, entry->len);

if (hdr->len <= entry->len) {
@@ -988,7 +988,7 @@ out:
/* Ensure that the data is fully copied out before clearing the flag */
wmb();
hdr->flags = 0;
- qp->rx_info->entry = qp->rx_index;
+ iowrite32(qp->rx_index, &qp->rx_info->entry);

qp->rx_index++;
qp->rx_index %= qp->rx_max_entry;
@@ -1018,19 +1018,19 @@ static void ntb_transport_rxc_db(void *data, int db_num)

static void ntb_tx_copy_task(struct ntb_transport_qp *qp,
struct ntb_queue_entry *entry,
- void *offset)
+ void __iomem *offset)
{
- struct ntb_payload_header *hdr;
+ struct ntb_payload_header __iomem *hdr;

memcpy_toio(offset, entry->buf, entry->len);

hdr = offset + qp->tx_max_frame - sizeof(struct ntb_payload_header);
- hdr->len = entry->len;
- hdr->ver = qp->tx_pkts;
+ iowrite32(entry->len, &hdr->len);
+ iowrite32((u32) qp->tx_pkts, &hdr->ver);

/* Ensure that the data is fully copied out before setting the flag */
wmb();
- hdr->flags = entry->flags | DESC_DONE_FLAG;
+ iowrite32(entry->flags | DESC_DONE_FLAG, &hdr->flags);

ntb_ring_sdb(qp->ndev, qp->qp_num);

@@ -1052,7 +1052,7 @@ static void ntb_tx_copy_task(struct ntb_transport_qp *qp,
static int ntb_process_tx(struct ntb_transport_qp *qp,
struct ntb_queue_entry *entry)
{
- void *offset;
+ void __iomem *offset;

offset = qp->tx_mw + qp->tx_max_frame * qp->tx_index;

--
1.7.9.5


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