diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/crypto/ccp/sev-dev.c | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index b292641c8a99..8512101f0bdf 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -211,18 +211,24 @@ static int sev_read_init_ex_file(void) if (IS_ERR(fp)) { int ret = PTR_ERR(fp); - dev_err(sev->dev, - "SEV: could not open %s for read, error %d\n", - init_ex_path, ret); + if (ret == -ENOENT) { + dev_info(sev->dev, + "SEV: %s does not exist and will be created later.\n", + init_ex_path); + ret = 0; + } else { + dev_err(sev->dev, + "SEV: could not open %s for read, error %d\n", + init_ex_path, ret); + } return ret; } nread = kernel_read(fp, sev_init_ex_buffer, NV_LENGTH, NULL); if (nread != NV_LENGTH) { - dev_err(sev->dev, - "SEV: failed to read %u bytes to non volatile memory area, ret %ld\n", + dev_info(sev->dev, + "SEV: could not read %u bytes to non volatile memory area, ret %ld\n", NV_LENGTH, nread); - return -EIO; } dev_dbg(sev->dev, "SEV: read %ld bytes from NV file\n", nread); @@ -410,17 +416,12 @@ static int __sev_init_locked(int *error) static int __sev_init_ex_locked(int *error) { struct sev_data_init_ex data; - int ret; memset(&data, 0, sizeof(data)); data.length = sizeof(data); data.nv_address = __psp_pa(sev_init_ex_buffer); data.nv_len = NV_LENGTH; - ret = sev_read_init_ex_file(); - if (ret) - return ret; - if (sev_es_tmr) { /* * Do not include the encryption mask on the physical @@ -439,7 +440,7 @@ static int __sev_platform_init_locked(int *error) { struct psp_device *psp = psp_master; struct sev_device *sev; - int rc, psp_ret = -1; + int rc = 0, psp_ret = -1; int (*init_function)(int *error); if (!psp || !psp->sev_data) @@ -450,8 +451,15 @@ static int __sev_platform_init_locked(int *error) if (sev->state == SEV_STATE_INIT) return 0; - init_function = sev_init_ex_buffer ? __sev_init_ex_locked : - __sev_init_locked; + if (sev_init_ex_buffer) { + init_function = __sev_init_ex_locked; + rc = sev_read_init_ex_file(); + if (rc) + return rc; + } else { + init_function = __sev_init_locked; + } + rc = init_function(&psp_ret); if (rc && psp_ret == SEV_RET_SECURE_DATA_INVALID) { /* |