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mtd: pmcmsp-flash: Allocating too much in init_msp_flash() 

There is a cut and paste issue here.  The bug is that we are allocating
more memory than necessary for msp_maps.  We should be allocating enough
space for a map_info struct (144 bytes) but we instead allocate enough
for an mtd_info struct (1840 bytes).  It's a small waste.

The other part of this is not harmful but when we allocated msp_flash
then we allocated enough space fro a map_info pointer instead of an
mtd_info pointer.  But since pointers are the same size it works out
fine.

Anyway, I decided to clean up all three allocations a bit to make them
a bit more consistent and clear.

Fixes: 68aa0fa87f ('[MTD] PMC MSP71xx flash/rootfs mappings')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Dan Carpenter 2016-07-14 13:44:56 +03:00 committed by Brian Norris
parent dc01a28d80
commit 79ad07d457
1 changed files with 3 additions and 3 deletions
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6
drivers/mtd/maps/pmcmsp-flash.c
View File

@ -75,15 +75,15 @@ static int __init init_msp_flash(void)
printk(KERN_NOTICE "Found %d PMC flash devices\n", fcnt);
msp_flash = kmalloc(fcnt * sizeof(struct map_info *), GFP_KERNEL);
msp_flash = kcalloc(fcnt, sizeof(*msp_flash), GFP_KERNEL);
if (!msp_flash)
return -ENOMEM;
msp_parts = kmalloc(fcnt * sizeof(struct mtd_partition *), GFP_KERNEL);
msp_parts = kcalloc(fcnt, sizeof(*msp_parts), GFP_KERNEL);
if (!msp_parts)
goto free_msp_flash;
msp_maps = kcalloc(fcnt, sizeof(struct mtd_info), GFP_KERNEL);
msp_maps = kcalloc(fcnt, sizeof(*msp_maps), GFP_KERNEL);
if (!msp_maps)
goto free_msp_parts;