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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-10-11 22:34:07 +0400 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-10-11 22:34:07 +0400 |
| commit | 9d93551188069a0a21e664b4bfc89ed4a6df1903 (patch) | |
| tree | bcf7334c0e57323a6844b8147ce1c92180fe8cef /drivers/usb/storage/uas-detect.h | |
| parent | dd4cae8bf16611053ee7b00e20aa4fa945b92b99 (diff) | |
| parent | bfe01a5ba2490f299e1d2d5508cbbbadd897bbe9 (diff) | |
| download | linux-9d93551188069a0a21e664b4bfc89ed4a6df1903.tar.xz | |
Merge tag 'v3.17' into next
Synchronize with mainline to bring in changes to Synaptics and i8042
drivers.
Diffstat (limited to 'drivers/usb/storage/uas-detect.h')
| -rw-r--r-- | drivers/usb/storage/uas-detect.h | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/drivers/usb/storage/uas-detect.h b/drivers/usb/storage/uas-detect.h index 503ac5c8d80f..8a6f371ed6e7 100644 --- a/drivers/usb/storage/uas-detect.h +++ b/drivers/usb/storage/uas-detect.h @@ -59,10 +59,6 @@ static int uas_use_uas_driver(struct usb_interface *intf, unsigned long flags = id->driver_info; int r, alt; - usb_stor_adjust_quirks(udev, &flags); - - if (flags & US_FL_IGNORE_UAS) - return 0; alt = uas_find_uas_alt_setting(intf); if (alt < 0) @@ -72,6 +68,29 @@ static int uas_use_uas_driver(struct usb_interface *intf, if (r < 0) return 0; + /* + * ASM1051 and older ASM1053 devices have the same usb-id, and UAS is + * broken on the ASM1051, use the number of streams to differentiate. + * New ASM1053-s also support 32 streams, but have a different prod-id. + */ + if (le16_to_cpu(udev->descriptor.idVendor) == 0x174c && + le16_to_cpu(udev->descriptor.idProduct) == 0x55aa) { + if (udev->speed < USB_SPEED_SUPER) { + /* No streams info, assume ASM1051 */ + flags |= US_FL_IGNORE_UAS; + } else if (usb_ss_max_streams(&eps[1]->ss_ep_comp) == 32) { + flags |= US_FL_IGNORE_UAS; + } + } + + usb_stor_adjust_quirks(udev, &flags); + + if (flags & US_FL_IGNORE_UAS) { + dev_warn(&udev->dev, + "UAS is blacklisted for this device, using usb-storage instead\n"); + return 0; + } + if (udev->bus->sg_tablesize == 0) { dev_warn(&udev->dev, "The driver for the USB controller %s does not support scatter-gather which is\n", |