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>
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 96ecf59..acd7c6e 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -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.