Commit 6a559bbe2f60ab64e28662f7ab52551a2eaa7163
Committed by
Marek Vasut
Marek Vasut
1 parent
3908f16f85
Exists in
v2017.01-smarct4x
and in
37 other branches
usb_storage: blacklist Enclosure Service Devices
Skip enclosure service devices when probing for usb storage devices. This avoids long timeouts when probing for external usb harddisks which provide "Enclosure Services". Signed-off-by: Soeren Moch <smoch@web.de> -- This is a new version of the patch "usb_storage: skip all unknown devices when probing" http://http://lists.denx.de/pipermail/u-boot/2014-November/194622.html Cc: Marek Vasut <marex@denx.de> Cc: Tom Rini <trini@ti.com>
Showing 1 changed file with 5 additions and 2 deletions Side-by-side Diff
common/usb_storage.c
| ... | ... | @@ -1351,8 +1351,11 @@ |
| 1351 | 1351 | perq = usb_stor_buf[0]; |
| 1352 | 1352 | modi = usb_stor_buf[1]; |
| 1353 | 1353 | |
| 1354 | - if ((perq & 0x1f) == 0x1f) { | |
| 1355 | - /* skip unknown devices */ | |
| 1354 | + /* | |
| 1355 | + * Skip unknown devices (0x1f) and enclosure service devices (0x0d), | |
| 1356 | + * they would not respond to test_unit_ready . | |
| 1357 | + */ | |
| 1358 | + if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) { | |
| 1356 | 1359 | return 0; |
| 1357 | 1360 | } |
| 1358 | 1361 | if ((modi&0x80) == 0x80) { |