diff options
| author | Peter Gonda <pgonda@google.com> | 2023-03-07 22:24:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-20 13:52:13 +0300 |
| commit | a5b03f56d38d8e353d75803fa9bf04cdd15e5204 (patch) | |
| tree | 59ad26e69cf38d2ddd80e0576e32e305c819b667 /drivers/crypto | |
| parent | 7c7371b41a14e86f53e7dbe5baa7b1d3e0ab324b (diff) | |
| download | linux-a5b03f56d38d8e353d75803fa9bf04cdd15e5204.tar.xz | |
crypto: ccp - Name -1 return value as SEV_RET_NO_FW_CALL
[ Upstream commit efb339a83368ab25de1a18c0fdff85e01c13a1ea ]
The PSP can return a "firmware error" code of -1 in circumstances where
the PSP has not actually been called. To make this protocol unambiguous,
name the value SEV_RET_NO_FW_CALL.
[ bp: Massage a bit. ]
Signed-off-by: Peter Gonda <pgonda@google.com>
Signed-off-by: Dionna Glaze <dionnaglaze@google.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20221207010210.2563293-2-dionnaglaze@google.com
Stable-dep-of: db10cb9b5746 ("virt: sevguest: Fix passing a stack buffer as a scatterlist target")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/ccp/sev-dev.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 3e583f032487..b8e02c3a1961 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -443,10 +443,10 @@ static int __sev_init_ex_locked(int *error) static int __sev_platform_init_locked(int *error) { + int rc = 0, psp_ret = SEV_RET_NO_FW_CALL; struct psp_device *psp = psp_master; - struct sev_device *sev; - int rc = 0, psp_ret = -1; int (*init_function)(int *error); + struct sev_device *sev; if (!psp || !psp->sev_data) return -ENODEV; @@ -474,9 +474,11 @@ static int __sev_platform_init_locked(int *error) * initialization function should succeed by replacing the state * with a reset state. */ - dev_err(sev->dev, "SEV: retrying INIT command because of SECURE_DATA_INVALID error. Retrying once to reset PSP SEV state."); + dev_err(sev->dev, +"SEV: retrying INIT command because of SECURE_DATA_INVALID error. Retrying once to reset PSP SEV state."); rc = init_function(&psp_ret); } + if (error) *error = psp_ret; |