net: emaclite: fix xemaclite_alignedread/write functions
Use __raw_read* and __raw_write* functions to ensure read/write
is passed to the memory-mapped regions, as non-volatile accesses
may get optimised out.
Signed-off-by: Samuel Obuch <samuel.obuch@codasip.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Link: https://lore.kernel.org/r/20220927112103.155689-2-samuel.obuch@codasip.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/drivers/net/xilinx_emaclite.c b/drivers/net/xilinx_emaclite.c
index 29e8271..a4851ad 100644
--- a/drivers/net/xilinx_emaclite.c
+++ b/drivers/net/xilinx_emaclite.c
@@ -112,12 +112,12 @@
/* Word aligned buffer, no correction needed. */
to32ptr = (u32 *) destptr;
while (bytecount > 3) {
- *to32ptr++ = *from32ptr++;
+ *to32ptr++ = __raw_readl(from32ptr++);
bytecount -= 4;
}
to8ptr = (u8 *) to32ptr;
- alignbuffer = *from32ptr++;
+ alignbuffer = __raw_readl(from32ptr++);
from8ptr = (u8 *) &alignbuffer;
for (i = 0; i < bytecount; i++)
@@ -135,8 +135,7 @@
from32ptr = (u32 *) srcptr;
while (bytecount > 3) {
-
- *to32ptr++ = *from32ptr++;
+ __raw_writel(*from32ptr++, to32ptr++);
bytecount -= 4;
}
@@ -147,7 +146,7 @@
for (i = 0; i < bytecount; i++)
*to8ptr++ = *from8ptr++;
- *to32ptr++ = alignbuffer;
+ __raw_writel(alignbuffer, to32ptr++);
}
static int wait_for_bit(const char *func, u32 *reg, const u32 mask,