drm/radeon: fix endian bugs in hw i2c atom routines
Need to swap the data fetched over i2c properly. This
is the same fix as the endian fix for aux channel
transactions.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 32501f6..1602398 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -50,7 +50,7 @@
* or from atom. Note that atom operates on
* dw units.
*/
-static void radeon_copy_swap(u8 *dst, u8 *src, u8 num_bytes, bool to_le)
+void radeon_atom_copy_swap(u8 *dst, u8 *src, u8 num_bytes, bool to_le)
{
#ifdef __BIG_ENDIAN
u8 src_tmp[20], dst_tmp[20]; /* used for byteswapping */
@@ -100,7 +100,7 @@
base = (unsigned char *)(rdev->mode_info.atom_context->scratch + 1);
- radeon_copy_swap(base, send, send_bytes, true);
+ radeon_atom_copy_swap(base, send, send_bytes, true);
args.v1.lpAuxRequest = cpu_to_le16((u16)(0 + 4));
args.v1.lpDataOut = cpu_to_le16((u16)(16 + 4));
@@ -137,7 +137,7 @@
recv_bytes = recv_size;
if (recv && recv_size)
- radeon_copy_swap(recv, base + 16, recv_bytes, false);
+ radeon_atom_copy_swap(recv, base + 16, recv_bytes, false);
return recv_bytes;
}