diff options
| author | Nishanth Menon <nm@ti.com> | 2013-12-04 05:43:13 +0400 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2013-12-05 17:28:43 +0400 |
| commit | f7b2b5dd6a62a47e871627c71ed01aa3482154d9 (patch) | |
| tree | 4de401a7a20a39b801b5d2e672e7c3e9b5afc125 /drivers/crypto | |
| parent | c0e656b7a6e1ac03b2921d49211a735893efd544 (diff) | |
| download | linux-f7b2b5dd6a62a47e871627c71ed01aa3482154d9.tar.xz | |
crypto: omap-aes - add error check for pm_runtime_get_sync
The AES driver currently assumes that pm_runtime_get_sync will always
succeed, which may not always be true, so add error handling for the
same.
This scenario was reported in the following bug:
place. https://bugzilla.kernel.org/show_bug.cgi?id=66441
Reported-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/omap-aes.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index a9ccbf14096e..dde41f1df608 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -784,6 +784,7 @@ static int omap_aes_ctr_decrypt(struct ablkcipher_request *req) static int omap_aes_cra_init(struct crypto_tfm *tfm) { struct omap_aes_dev *dd = NULL; + int err; /* Find AES device, currently picks the first device */ spin_lock_bh(&list_lock); @@ -792,7 +793,13 @@ static int omap_aes_cra_init(struct crypto_tfm *tfm) } spin_unlock_bh(&list_lock); - pm_runtime_get_sync(dd->dev); + err = pm_runtime_get_sync(dd->dev); + if (err < 0) { + dev_err(dd->dev, "%s: failed to get_sync(%d)\n", + __func__, err); + return err; + } + tfm->crt_ablkcipher.reqsize = sizeof(struct omap_aes_reqctx); return 0; @@ -1182,7 +1189,12 @@ static int omap_aes_probe(struct platform_device *pdev) dd->phys_base = res.start; pm_runtime_enable(dev); - pm_runtime_get_sync(dev); + err = pm_runtime_get_sync(dev); + if (err < 0) { + dev_err(dev, "%s: failed to get_sync(%d)\n", + __func__, err); + goto err_res; + } omap_aes_dma_stop(dd); |