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mmc: core: Fix size overflow for mmc partitions

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With large eMMC cards, it is possible to create general purpose
partitions that are bigger than 4GB.  The size member of the mmc_part
struct is only an unsigned int which overflows for gp partitions larger
than 4GB.  Change this to a u64 to handle the overflow.

Signed-off-by: Bradley Bolen <bradleybolen@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Bradley Bolen 2019-11-16 20:00:45 -05:00 • committed by Ulf Hansson
parent c91843463e
commit f3d7c2292d
2 changed files with 5 additions and 6 deletions
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2
include/linux/mmc/card.h
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@ -226,7 +226,7 @@ struct mmc_queue_req;
* MMC Physical partitions
*/
struct mmc_part {
unsigned int size; /* partition size (in bytes) */
u64 size; /* partition size (in bytes) */
unsigned int part_cfg; /* partition type */
char name[MAX_MMC_PART_NAME_LEN];
bool force_ro; /* to make boot parts RO by default */