diff options
| author | Mario Limonciello <mario.limonciello@amd.com> | 2023-04-03 21:32:12 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-04-14 13:59:34 +0300 |
| commit | a19c61b06585f71c4dc1303fe6a3af79dfe33678 (patch) | |
| tree | 3001f49fb0c6567fc7745d99d3c80dec3c992c4b /drivers/crypto | |
| parent | e0358dedff4ff432318665927d45f4786c34ed52 (diff) | |
| download | linux-a19c61b06585f71c4dc1303fe6a3af79dfe33678.tar.xz | |
crypto: ccp - Return doorbell status code as an argument
If the doorbell failed to ring we return -EIO, but the caller can't
determine why it failed. Pass the reason for the failure in an
argument for caller to investigate.
Suggested-by: Mark Hasemeyer <markhas@chromium.org>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Mark Hasemeyer <markhas@chromium.org>
Tested-by: Mark Hasemeyer <markhas@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/ccp/platform-access.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/crypto/ccp/platform-access.c b/drivers/crypto/ccp/platform-access.c index 1cc154a1c6ab..48f59ae91692 100644 --- a/drivers/crypto/ccp/platform-access.c +++ b/drivers/crypto/ccp/platform-access.c @@ -132,7 +132,7 @@ unlock: } EXPORT_SYMBOL_GPL(psp_send_platform_access_msg); -int psp_ring_platform_doorbell(int msg) +int psp_ring_platform_doorbell(int msg, u32 *result) { struct psp_device *psp = psp_get_master_device(); struct psp_platform_access_device *pa_dev; @@ -164,6 +164,8 @@ int psp_ring_platform_doorbell(int msg) val = FIELD_GET(PSP_CMDRESP_STS, ioread32(cmd)); if (val) { + if (result) + *result = val; ret = -EIO; goto unlock; } |