myri10ge: treat firmware data as const
... which means allocating our own buffer for reading it back.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index e0d76c7..823bb6d 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -529,6 +529,7 @@
unsigned crc, reread_crc;
const struct firmware *fw;
struct device *dev = &mgp->pdev->dev;
+ unsigned char *fw_readback;
struct mcp_gen_header *hdr;
size_t hdr_offset;
int status;
@@ -571,9 +572,15 @@
mb();
readb(mgp->sram);
}
+ fw_readback = vmalloc(fw->size);
+ if (!fw_readback) {
+ status = -ENOMEM;
+ goto abort_with_fw;
+ }
/* corruption checking is good for parity recovery and buggy chipset */
- memcpy_fromio(fw->data, mgp->sram + MYRI10GE_FW_OFFSET, fw->size);
- reread_crc = crc32(~0, fw->data, fw->size);
+ memcpy_fromio(fw_readback, mgp->sram + MYRI10GE_FW_OFFSET, fw->size);
+ reread_crc = crc32(~0, fw_readback, fw->size);
+ vfree(fw_readback);
if (crc != reread_crc) {
dev_err(dev, "CRC failed(fw-len=%u), got 0x%x (expect 0x%x)\n",
(unsigned)fw->size, reread_crc, crc);