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Subject[PATCH 50] drivers/message/fusion/mptctl.c: mostly kmalloc + memset conversion to kzalloc
Date
This patch does kmalloc + memset conversion to kzalloc and simplifies mptctl_probe().

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>

drivers/message/fusion/mptctl.c | 82092 -> 81884 (-208 bytes)
drivers/message/fusion/mptctl.o | 201784 -> 200648 (-1136 bytes)

drivers/message/fusion/mptctl.c | 36 ++++++++++--------------------
1 file changed, 12 insertions(+), 24 deletions(-)

--- linux-2.6.23-rc1-mm1-a/drivers/message/fusion/mptctl.c 2007-07-26 13:07:44.000000000 +0200
+++ linux-2.6.23-rc1-mm1-b/drivers/message/fusion/mptctl.c 2007-07-31 18:02:38.000000000 +0200
@@ -963,10 +963,9 @@ kbuf_alloc_2_sgl(int bytes, u32 sgdir, i
* structures for the SG elements.
*/
i = MAX_SGL_BYTES / 8;
- buflist = kmalloc(i, GFP_USER);
- if (buflist == NULL)
+ buflist = kzalloc(i, GFP_USER);
+ if (!buflist)
return NULL;
- memset(buflist, 0, i);
buflist_ent = 0;

/* Allocate a single block of memory to store the sg elements and
@@ -1363,13 +1362,12 @@ mptctl_gettargetinfo (unsigned long arg)
* 15- 8: Bus Number
* 7- 0: Target ID
*/
- pmem = kmalloc(numBytes, GFP_KERNEL);
- if (pmem == NULL) {
+ pmem = kzalloc(numBytes, GFP_KERNEL);
+ if (!pmem) {
printk(KERN_ERR "%s::mptctl_gettargetinfo() @%d - no memory available!\n",
__FILE__, __LINE__);
return -ENOMEM;
}
- memset(pmem, 0, numBytes);
pdata = (int *) pmem;

/* Get number of devices
@@ -1551,12 +1549,11 @@ mptctl_eventenable (unsigned long arg)
/* Have not yet allocated memory - do so now.
*/
int sz = MPTCTL_EVENT_LOG_SIZE * sizeof(MPT_IOCTL_EVENTS);
- ioc->events = kmalloc(sz, GFP_KERNEL);
- if (ioc->events == NULL) {
+ ioc->events = kzalloc(sz, GFP_KERNEL);
+ if (!ioc->events) {
printk(KERN_ERR MYNAM ": ERROR - Insufficient memory to add adapter!\n");
return -ENOMEM;
}
- memset(ioc->events, 0, sz);
ioc->alloc_total += sz;

ioc->eventContext = 0;
@@ -2823,31 +2820,22 @@ static long compat_mpctl_ioctl(struct fi
static int
mptctl_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
- int err;
- int sz;
- u8 *mem;
+ MPT_IOCTL *mem;
MPT_ADAPTER *ioc = pci_get_drvdata(pdev);

/*
* Allocate and inite a MPT_IOCTL structure
*/
- sz = sizeof (MPT_IOCTL);
- mem = kmalloc(sz, GFP_KERNEL);
- if (mem == NULL) {
- err = -ENOMEM;
- goto out_fail;
+ mem = kzalloc(sizeof(MPT_IOCTL), GFP_KERNEL);
+ if (!mem) {
+ mptctl_remove(pdev);
+ return -ENOMEM;
}

- memset(mem, 0, sz);
- ioc->ioctl = (MPT_IOCTL *) mem;
+ ioc->ioctl = mem;
ioc->ioctl->ioc = ioc;
mutex_init(&ioc->ioctl->ioctl_mutex);
return 0;
-
-out_fail:
-
- mptctl_remove(pdev);
- return err;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
-
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