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Subject[PATCH v2 2/8] dm,mmc,ufshcd: handle error from blk_ksm_register()
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Handle any error from blk_ksm_register() in the callers. Previously,
the callers ignored the return value because blk_ksm_register() wouldn't
fail as long as the request_queue didn't have integrity support too, but
as this is no longer the case, it's safer for the callers to just handle
the return value appropriately.

Signed-off-by: Satya Tangirala <satyat@google.com>
---
drivers/md/dm-table.c | 3 ++-
drivers/mmc/core/crypto.c | 6 ++++--
drivers/scsi/ufs/ufshcd-crypto.c | 6 ++++--
3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index db18a58adad7..1225b9050f29 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1372,7 +1372,8 @@ static void dm_update_keyslot_manager(struct request_queue *q,

/* Make the ksm less restrictive */
if (!q->ksm) {
- blk_ksm_register(t->ksm, q);
+ if (WARN_ON(!blk_ksm_register(t->ksm, q)))
+ dm_destroy_keyslot_manager(t->ksm);
} else {
blk_ksm_update_capabilities(q->ksm, t->ksm);
dm_destroy_keyslot_manager(t->ksm);
diff --git a/drivers/mmc/core/crypto.c b/drivers/mmc/core/crypto.c
index 419a368f8402..616103393557 100644
--- a/drivers/mmc/core/crypto.c
+++ b/drivers/mmc/core/crypto.c
@@ -21,8 +21,10 @@ void mmc_crypto_set_initial_state(struct mmc_host *host)

void mmc_crypto_setup_queue(struct request_queue *q, struct mmc_host *host)
{
- if (host->caps2 & MMC_CAP2_CRYPTO)
- blk_ksm_register(&host->ksm, q);
+ if (host->caps2 & MMC_CAP2_CRYPTO) {
+ if (WARN_ON(!blk_ksm_register(&host->ksm, q)))
+ host->caps2 &= ~MMC_CAP2_CRYPTO;
+ }
}
EXPORT_SYMBOL_GPL(mmc_crypto_setup_queue);

diff --git a/drivers/scsi/ufs/ufshcd-crypto.c b/drivers/scsi/ufs/ufshcd-crypto.c
index d70cdcd35e43..f47a72fefe9e 100644
--- a/drivers/scsi/ufs/ufshcd-crypto.c
+++ b/drivers/scsi/ufs/ufshcd-crypto.c
@@ -233,6 +233,8 @@ void ufshcd_init_crypto(struct ufs_hba *hba)
void ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba *hba,
struct request_queue *q)
{
- if (hba->caps & UFSHCD_CAP_CRYPTO)
- blk_ksm_register(&hba->ksm, q);
+ if (hba->caps & UFSHCD_CAP_CRYPTO) {
+ if (WARN_ON(!blk_ksm_register(&hba->ksm, q)))
+ hba->caps &= ~UFSHCD_CAP_CRYPTO;
+ }
}
--
2.31.0.291.g576ba9dcdaf-goog
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