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Revision a7d8d1c7a7f73e780aa9ae74926ae5985b2f895f authored by Andrew Lunn on 14 June 2021, 15:55:23 UTC, committed by Greg Kroah-Hartman on 17 June 2021, 13:34:21 UTC 
usb: core: hub: Disable autosuspend for Cypress CY7C65632
 
The Cypress CY7C65632 appears to have an issue with auto suspend and
detecting devices, not too dissimilar to the SMSC 5534B hub. It is
easiest to reproduce by connecting multiple mass storage devices to
the hub at the same time. On a Lenovo Yoga, around 1 in 3 attempts
result in the devices not being detected. It is however possible to
make them appear using lsusb -v.

Disabling autosuspend for this hub resolves the issue.

Fixes: 1208f9e1d758 ("USB: hub: Fix the broken detection of USB3 device in SMSC hub")
Cc: stable@vger.kernel.org
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210614155524.2228800-1-andrew@lunn.ch
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 parent 60ed39d
Raw File
check.h 
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/pagemap.h>
#include <linux/blkdev.h>
#include <linux/genhd.h>
#include "../blk.h"

/*
 * add_gd_partition adds a partitions details to the devices partition
 * description.
 */
struct parsed_partitions {
	struct block_device *bdev;
	char name[BDEVNAME_SIZE];
	struct {
		sector_t from;
		sector_t size;
		int flags;
		bool has_info;
		struct partition_meta_info info;
	} *parts;
	int next;
	int limit;
	bool access_beyond_eod;
	char *pp_buf;
};

typedef struct {
	struct page *v;
} Sector;

void *read_part_sector(struct parsed_partitions *state, sector_t n, Sector *p);
static inline void put_dev_sector(Sector p)
{
	put_page(p.v);
}

static inline void
put_partition(struct parsed_partitions *p, int n, sector_t from, sector_t size)
{
	if (n < p->limit) {
		char tmp[1 + BDEVNAME_SIZE + 10 + 1];

		p->parts[n].from = from;
		p->parts[n].size = size;
		snprintf(tmp, sizeof(tmp), " %s%d", p->name, n);
		strlcat(p->pp_buf, tmp, PAGE_SIZE);
	}
}

/* detection routines go here in alphabetical order: */
int adfspart_check_ADFS(struct parsed_partitions *state);
int adfspart_check_CUMANA(struct parsed_partitions *state);
int adfspart_check_EESOX(struct parsed_partitions *state);
int adfspart_check_ICS(struct parsed_partitions *state);
int adfspart_check_POWERTEC(struct parsed_partitions *state);
int aix_partition(struct parsed_partitions *state);
int amiga_partition(struct parsed_partitions *state);
int atari_partition(struct parsed_partitions *state);
int cmdline_partition(struct parsed_partitions *state);
int efi_partition(struct parsed_partitions *state);
int ibm_partition(struct parsed_partitions *);
int karma_partition(struct parsed_partitions *state);
int ldm_partition(struct parsed_partitions *state);
int mac_partition(struct parsed_partitions *state);
int msdos_partition(struct parsed_partitions *state);
int osf_partition(struct parsed_partitions *state);
int sgi_partition(struct parsed_partitions *state);
int sun_partition(struct parsed_partitions *state);
int sysv68_partition(struct parsed_partitions *state);
int ultrix_partition(struct parsed_partitions *state);
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