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scsi: megaraid: Fix set but unused variable 

In megadev_ioctl(), if MEGA_HAVE_STATS is not defined, the variables
num_ldrv and ustats are unused. Conditionally define them to avoid compiler
warnings.

Link: https://lore.kernel.org/r/20200706123351.451959-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Damien Le Moal 2020-07-06 21:33:51 +09:00 committed by Martin K. Petersen
parent 2a6576d29d
commit aa055885eb
1 changed files with 4 additions and 5 deletions
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9
drivers/scsi/megaraid.c
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@ -2975,14 +2975,13 @@ megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
void *data = NULL; /* data to be transferred */
dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
megacmd_t mc;
megastat_t __user *ustats;
int num_ldrv;
#if MEGA_HAVE_STATS
megastat_t __user *ustats = NULL;
int num_ldrv = 0;
#endif
u32 uxferaddr = 0;
struct pci_dev *pdev;
ustats = NULL; /* avoid compilation warnings */
num_ldrv = 0;
/*
* Make sure only USCSICMD are issued through this interface.
* MIMD application would still fire different command.