From a19c61b06585f71c4dc1303fe6a3af79dfe33678 Mon Sep 17 00:00:00 2001 From: Mario Limonciello Date: Mon, 3 Apr 2023 13:32:12 -0500 Subject: 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 Signed-off-by: Mario Limonciello Reviewed-by: Mark Hasemeyer Tested-by: Mark Hasemeyer Signed-off-by: Herbert Xu --- drivers/crypto/ccp/platform-access.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/crypto') 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; } -- cgit v1.2.3