diff options
Diffstat (limited to 'drivers/crypto/ccp/sev-dev.c')
| -rw-r--r-- | drivers/crypto/ccp/sev-dev.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index ef7e8b4c6e02..8ea362ac014f 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -141,6 +141,17 @@ static int sev_cmd_buffer_len(int cmd) return 0; } +static void *sev_fw_alloc(unsigned long len) +{ + struct page *page; + + page = alloc_pages(GFP_KERNEL, get_order(len)); + if (!page) + return NULL; + + return page_address(page); +} + static int __sev_do_cmd_locked(int cmd, void *data, int *psp_ret) { struct psp_device *psp = psp_master; @@ -1078,7 +1089,6 @@ EXPORT_SYMBOL_GPL(sev_issue_cmd_external_user); void sev_pci_init(void) { struct sev_device *sev = psp_master->sev_data; - struct page *tmr_page; int error, rc; if (!sev) @@ -1094,14 +1104,10 @@ void sev_pci_init(void) sev_get_api_version(); /* Obtain the TMR memory area for SEV-ES use */ - tmr_page = alloc_pages(GFP_KERNEL, get_order(SEV_ES_TMR_SIZE)); - if (tmr_page) { - sev_es_tmr = page_address(tmr_page); - } else { - sev_es_tmr = NULL; + sev_es_tmr = sev_fw_alloc(SEV_ES_TMR_SIZE); + if (!sev_es_tmr) dev_warn(sev->dev, "SEV: TMR allocation failed, SEV-ES support unavailable\n"); - } /* Initialize the platform */ rc = sev_platform_init(&error); |