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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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21c13a4f7b
Some USB mass-storage devices have bugs that cause them not to handle the first READ(10) command they receive correctly. The Corsair Padlock v2 returns completely bogus data for its first read (possibly it returns the data in encrypted form even though the device is supposed to be unlocked). The Feiya SD/SDHC card reader fails to complete the first READ(10) command after it is plugged in or after a new card is inserted, returning a status code that indicates it thinks the command was invalid, which prevents the kernel from retrying the read. Since the first read of a new device or a new medium is for the partition sector, the kernel is unable to retrieve the device's partition table. Users have to manually issue an "hdparm -z" or "blockdev --rereadpt" command before they can access the device. This patch (as1470) works around the problem. It adds a new quirk flag, US_FL_INVALID_READ10, indicating that the first READ(10) should always be retried immediately, as should any failing READ(10) commands (provided the preceding READ(10) command succeeded, to avoid getting stuck in a loop). The patch also adds appropriate unusual_devs entries containing the new flag. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Tested-by: Sven Geggus <sven-usbst@geggus.net> Tested-by: Paul Hartman <paul.hartman+linux@gmail.com> CC: Matthew Dharm <mdharm-usb@one-eyed-alien.net> CC: <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/*
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* Interface to the libusual.
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*
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* Copyright (c) 2005 Pete Zaitcev <zaitcev@redhat.com>
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* Copyright (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
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* Copyright (c) 1999 Michael Gee (michael@linuxspecific.com)
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*/
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#ifndef __LINUX_USB_USUAL_H
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#define __LINUX_USB_USUAL_H
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/* We should do this for cleanliness... But other usb_foo.h do not do this. */
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/* #include <linux/usb.h> */
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/*
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* The flags field, which we store in usb_device_id.driver_info.
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* It is compatible with the old usb-storage flags in lower 24 bits.
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*/
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/*
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* Static flag definitions. We use this roundabout technique so that the
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* proc_info() routine can automatically display a message for each flag.
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*/
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#define US_DO_ALL_FLAGS \
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US_FLAG(SINGLE_LUN, 0x00000001) \
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/* allow access to only LUN 0 */ \
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US_FLAG(NEED_OVERRIDE, 0x00000002) \
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/* unusual_devs entry is necessary */ \
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US_FLAG(SCM_MULT_TARG, 0x00000004) \
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/* supports multiple targets */ \
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US_FLAG(FIX_INQUIRY, 0x00000008) \
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/* INQUIRY response needs faking */ \
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US_FLAG(FIX_CAPACITY, 0x00000010) \
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/* READ CAPACITY response too big */ \
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US_FLAG(IGNORE_RESIDUE, 0x00000020) \
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/* reported residue is wrong */ \
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US_FLAG(BULK32, 0x00000040) \
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/* Uses 32-byte CBW length */ \
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US_FLAG(NOT_LOCKABLE, 0x00000080) \
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/* PREVENT/ALLOW not supported */ \
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US_FLAG(GO_SLOW, 0x00000100) \
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/* Need delay after Command phase */ \
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US_FLAG(NO_WP_DETECT, 0x00000200) \
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/* Don't check for write-protect */ \
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US_FLAG(MAX_SECTORS_64, 0x00000400) \
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/* Sets max_sectors to 64 */ \
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US_FLAG(IGNORE_DEVICE, 0x00000800) \
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/* Don't claim device */ \
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US_FLAG(CAPACITY_HEURISTICS, 0x00001000) \
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/* sometimes sizes is too big */ \
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US_FLAG(MAX_SECTORS_MIN,0x00002000) \
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/* Sets max_sectors to arch min */ \
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US_FLAG(BULK_IGNORE_TAG,0x00004000) \
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/* Ignore tag mismatch in bulk operations */ \
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US_FLAG(SANE_SENSE, 0x00008000) \
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/* Sane Sense (> 18 bytes) */ \
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US_FLAG(CAPACITY_OK, 0x00010000) \
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/* READ CAPACITY response is correct */ \
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US_FLAG(BAD_SENSE, 0x00020000) \
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/* Bad Sense (never more than 18 bytes) */ \
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US_FLAG(NO_READ_DISC_INFO, 0x00040000) \
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/* cannot handle READ_DISC_INFO */ \
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US_FLAG(NO_READ_CAPACITY_16, 0x00080000) \
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/* cannot handle READ_CAPACITY_16 */ \
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US_FLAG(INITIAL_READ10, 0x00100000) \
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/* Initial READ(10) (and others) must be retried */
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#define US_FLAG(name, value) US_FL_##name = value ,
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enum { US_DO_ALL_FLAGS };
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#undef US_FLAG
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/*
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* The bias field for libusual and friends.
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*/
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#define USB_US_TYPE_NONE 0
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#define USB_US_TYPE_STOR 1 /* usb-storage */
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#define USB_US_TYPE_UB 2 /* ub */
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#define USB_US_TYPE(flags) (((flags) >> 24) & 0xFF)
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#define USB_US_ORIG_FLAGS(flags) ((flags) & 0x00FFFFFF)
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#include <linux/usb/storage.h>
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/*
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*/
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extern int usb_usual_ignore_device(struct usb_interface *intf);
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extern struct usb_device_id usb_storage_usb_ids[];
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#ifdef CONFIG_USB_LIBUSUAL
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extern void usb_usual_set_present(int type);
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extern void usb_usual_clear_present(int type);
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extern int usb_usual_check_type(const struct usb_device_id *, int type);
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#else
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#define usb_usual_set_present(t) do { } while(0)
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#define usb_usual_clear_present(t) do { } while(0)
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#define usb_usual_check_type(id, t) (0)
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#endif /* CONFIG_USB_LIBUSUAL */
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#endif /* __LINUX_USB_USUAL_H */
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