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crypto: intel_fcs: check platform name when invoke mmap #18

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crypto: intel_fcs: check platform name when invoke mmap #18

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5 changes: 4 additions & 1 deletion drivers/crypto/intel_fcs_main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -95,6 +95,7 @@ struct socfpga_fcs_data {
bool have_hwrng;
};

static const char *platform;
static char *source_ptr;

typedef void (*fcs_callback)(struct stratix10_svc_client *client,
Expand Down Expand Up @@ -3730,6 +3731,9 @@ static int fcs_mmap(struct file *filp, struct vm_area_struct *vma)
unsigned long size, off;
struct page *page;

if (strncmp(platform, AGILEX_PLATFORM, AGILEX_PLATFORM_STR_LEN))
return -ENOTSUPP;

if (!source_ptr) {
pr_err("vmalloc failed mmap %s", __func__);
return -ENOMEM;
Expand Down Expand Up @@ -3762,7 +3766,6 @@ static int fcs_driver_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct intel_fcs_priv *priv;
int ret, i;
const char *platform;
struct stratix10_svc_client_msg msg;
unsigned long off;
int l2_idx = SRC_BUFFER_STARTING_L2_IDX;
Expand Down