[PATCH 13/17] USB Mass Storage: limit "Rockchip ROCK MP3" device (071b:3203) max I/O to 64 sectors per command
Greg Kroah-Hartman <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
From: Massimiliano Ghilardi <[email protected]> The MP3/MP4/AVI player "Rockchip ROCK MP3" is seen as a USB disk, but fails if more than 128 sectors (64kB) are sent or requested in a single read or write command, and disconnects from the USB bus. Typical kernel log showing the problem is: usb 3-1: reset high speed USB device using ehci_hcd and address 6 usb 3-1: reset high speed USB device using ehci_hcd and address 6 sd 14:0:0:0: [sdb] Result: hostbyte=0x07 driverbyte=0x00 end_request: I/O error, dev sdb, sector 32 sd 14:0:0:0: [sdb] Result: hostbyte=0x07 driverbyte=0x00 end_request: I/O error, dev sdb, sector 32 usb 3-1: USB disconnect, address 6 This patch works around the device limitation by adding "Rockchip ROCK MP3" to unusual USB devices list and limiting data transfers to 64 sectors (32kB) per command. Tested on 2.6.23-rc5 (amd64). Signed-off-by: Massimiliano Ghilardi <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/usb/storage/unusual_devs.h | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index da52d10..c6b78ba 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -904,6 +904,22 @@ UNUSUAL_DEV( 0x069b, 0x3004, 0x0001, 0x0001, US_SC_DEVICE, US_PR_DEVICE, NULL, US_FL_FIX_CAPACITY ), +/* Reported by Massimiliano Ghilardi <[email protected]> + * This USB MP3/AVI player device fails and disconnects if more than 128 + * sectors (64kB) are read/written in a single command, and may be present + * at least in the following products: + * "Magnex Digital Video Panel DVP 1800" + * "MP4 AIGO 4GB SLOT SD" + * "Teclast TL-C260 MP3" + * "i.Meizu PMP MP3/MP4" + * "Speed MV8 MP4 Audio Player" + */ +UNUSUAL_DEV( 0x071b, 0x3203, 0x0100, 0x0100, + "RockChip", + "ROCK MP3", + US_SC_DEVICE, US_PR_DEVICE, NULL, + US_FL_MAX_SECTORS_64), + /* Reported by Olivier Blondeau <[email protected]> */ UNUSUAL_DEV( 0x0727, 0x0306, 0x0100, 0x0100, "ATMEL", -- 1.5.3 ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel