diff options
Diffstat (limited to 'drivers/block/zram/backend_deflate.c')
| -rw-r--r-- | drivers/block/zram/backend_deflate.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/block/zram/backend_deflate.c b/drivers/block/zram/backend_deflate.c index b75016e0e654..fd438dcdfad6 100644 --- a/drivers/block/zram/backend_deflate.c +++ b/drivers/block/zram/backend_deflate.c @@ -24,8 +24,16 @@ static int deflate_setup_params(struct zcomp_params *params) { if (params->level == ZCOMP_PARAM_NOT_SET) params->level = Z_DEFAULT_COMPRESSION; - if (params->deflate.winbits == ZCOMP_PARAM_NOT_SET) + if (params->deflate.winbits == ZCOMP_PARAM_NOT_SET) { params->deflate.winbits = DEFLATE_DEF_WINBITS; + } else { + s32 wb = params->deflate.winbits; + + if ((wb < -15 || wb > -9) && (wb < 9 || wb > 15)) { + pr_err("invalid deflate winbits: %d\n", wb); + return -EINVAL; + } + } return 0; } |