USB Mass Storage: limit "Rockchip ROCK MP3" device (071b:3203) max I/O to 64 sectors per command
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 <massimiliano.ghilardi@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -904,6 +904,22 @@ UNUSUAL_DEV( 0x069b, 0x3004, 0x0001, 0x0001,
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US_SC_DEVICE, US_PR_DEVICE, NULL,
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US_FL_FIX_CAPACITY ),
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/* Reported by Massimiliano Ghilardi <massimiliano.ghilardi@gmail.com>
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* This USB MP3/AVI player device fails and disconnects if more than 128
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* sectors (64kB) are read/written in a single command, and may be present
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* at least in the following products:
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* "Magnex Digital Video Panel DVP 1800"
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* "MP4 AIGO 4GB SLOT SD"
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* "Teclast TL-C260 MP3"
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* "i.Meizu PMP MP3/MP4"
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* "Speed MV8 MP4 Audio Player"
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*/
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UNUSUAL_DEV( 0x071b, 0x3203, 0x0100, 0x0100,
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"RockChip",
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"ROCK MP3",
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US_SC_DEVICE, US_PR_DEVICE, NULL,
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US_FL_MAX_SECTORS_64),
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/* Reported by Olivier Blondeau <zeitoun@gmail.com> */
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UNUSUAL_DEV( 0x0727, 0x0306, 0x0100, 0x0100,
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"ATMEL",
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