drm/amdgpu: fix 64 bit divide in eeprom code

pos is 64 bits.

Fixes: c65b0805e77919 ("drm/amdgpu: RAS EEPROM table is now in debugfs")
Cc: luben.tuikov@amd.com
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
index 677e379f5fb5e96f8ad3c587d2db2f8f6aa8bc0b..fc70620369e4d70d9a3cd776b5cbfcd942ab495c 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
@@ -880,13 +880,17 @@ static ssize_t amdgpu_ras_debugfs_table_read(struct file *f, char __user *buf,
        if (*pos < data_len && size > 0) {
                u8 dare[RAS_TABLE_RECORD_SIZE];
                u8 data[rec_hdr_fmt_size + 1];
+               struct eeprom_table_record record;
+               int s, r;
+
                /* Find the starting record index
                 */
-               int s = (*pos - strlen(tbl_hdr_str) - tbl_hdr_fmt_size -
-                        strlen(rec_hdr_str)) / rec_hdr_fmt_size;
-               int r = (*pos - strlen(tbl_hdr_str) - tbl_hdr_fmt_size -
-                        strlen(rec_hdr_str)) % rec_hdr_fmt_size;
-               struct eeprom_table_record record;
+               s = *pos - strlen(tbl_hdr_str) - tbl_hdr_fmt_size -
+                       strlen(rec_hdr_str);
+               s = s / rec_hdr_fmt_size;
+               r = *pos - strlen(tbl_hdr_str) - tbl_hdr_fmt_size -
+                       strlen(rec_hdr_str);
+               r = r % rec_hdr_fmt_size;
 
                for ( ; size > 0 && s < control->ras_num_recs; s++) {
                        u32 ai = RAS_RI_TO_AI(control, s);