[PATCH v2 09/11] mptfusion: make adapter prod_name[] a pointer

Joe Lawrence
2014-06-25T21:06:55Z

The struct _MPT_ADAPTER doesn't need a full copy of the product string,
so prod_name can point to the string literal storage that the driver
already provides.

Avoids the following smatch warning:

drivers/message/fusion/mptbase.c:2858 MptDisplayIocCapabilities()
warn: this array is probably non-NULL. 'ioc->prod_name'

Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
drivers/message/fusion/mptbase.c | 11 +++++------
drivers/message/fusion/mptbase.h | 2 +-
2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index ea30033..9d4c782 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -1408,8 +1408,8 @@ mpt_verify_adapter(int iocid, MPT_ADAPTER **iocpp)
* in /proc/mpt/summary and /sysfs/class/scsi_host/host<X>/version_product
*
**/
-static void
-mpt_get_product_name(u16 vendor, u16 device, u8 revision, char *prod_name)
+static const char*
+mpt_get_product_name(u16 vendor, u16 device, u8 revision)
{
char *product_str = NULL;

@@ -1635,8 +1635,7 @@ mpt_get_product_name(u16 vendor, u16 device, u8 revision, char *prod_name)
}

out:
- if (product_str)
- sprintf(prod_name, "%s", product_str);
+ return product_str;
}

/**
@@ -1887,8 +1886,8 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
dinitprintk(ioc, printk(MYIOC_s_INFO_FMT "facts @ %p, pfacts[0] @ %p\n",
ioc->name, &ioc->facts, &ioc->pfacts[0]));

- mpt_get_product_name(pdev->vendor, pdev->device, pdev->revision,
- ioc->prod_name);
+ ioc->prod_name = mpt_get_product_name(pdev->vendor, pdev->device,
+ pdev->revision);

switch (pdev->device)
{
diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index 76c05bc..78c8104 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -605,7 +605,7 @@ typedef struct _MPT_ADAPTER
int id; /* Unique adapter id N {0,1,2,...} */
int pci_irq; /* This irq */
char name[MPT_NAME_LENGTH]; /* "iocN" */
- char prod_name[MPT_NAME_LENGTH]; /* "LSIFC9x9" */
+ const char *prod_name; /* "LSIFC9x9" */
#ifdef CONFIG_FUSION_LOGGING
/* used in mpt_display_event_info */
char evStr[EVENT_DESCR_STR_SZ];
--
1.7.10.4