diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2023-01-25 01:23:08 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-02-03 12:54:55 +0800 |
| commit | 727f083ff48ae94cd7422e42bb9513ab61160e8a (patch) | |
| tree | 172614935b4fb0c9a945c3b3c3708baa806442ce /drivers/crypto/stm32 | |
| parent | 2d27267b379f589836949481aec9c9f39dbe1f26 (diff) | |
crypto: stm32/hash - Use existing busy poll function
When exporting state we are waiting indefinitely in the same
was as the ordinary stm32_hash_wait_busy() poll-for-completion
function but without a timeout, which means we could hang in
an eternal loop. Fix this by waiting for completion like the
rest of the code.
Acked-by: Lionel Debieve <lionel.debieve@foss.st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/stm32')
| -rw-r--r-- | drivers/crypto/stm32/stm32-hash.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c index 0473ced7b4ea..cc0a4e413a82 100644 --- a/drivers/crypto/stm32/stm32-hash.c +++ b/drivers/crypto/stm32/stm32-hash.c @@ -960,11 +960,13 @@ static int stm32_hash_export(struct ahash_request *req, void *out) struct stm32_hash_dev *hdev = stm32_hash_find_dev(ctx); u32 *preg; unsigned int i; + int ret; pm_runtime_get_sync(hdev->dev); - while ((stm32_hash_read(hdev, HASH_SR) & HASH_SR_BUSY)) - cpu_relax(); + ret = stm32_hash_wait_busy(hdev); + if (ret) + return ret; rctx->hw_context = kmalloc_array(3 + HASH_CSR_REGISTER_NUMBER, sizeof(u32), |