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This allows the hid drivers to be independent from the transport layer.
The patch was constructed by replacing all occurences of
usbhid_submit_report() by its hid_hw_request() counterpart.
Then, drivers not requiring USB_HID anymore have their USB_HID
dependency cleaned in the Kconfig file.
Finally, few drivers still depends on USB_HID. Many of them
are requiring the io wait callback. They are found in the next patch.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
For the sensor-hub part:
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Stop earlier attempting to submit new reports/URBs (though locking and
usbhid still prevents to bail out early enough to not produce multiple
hid-picolcd 0003:04D8:C002.0003: usb_submit_urb(out) failed: -19
messages in kernel log.
Strengthen framebuffer removal to be less racy.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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[ 679.807480] BUG: unable to handle kernel NULL pointer dereference at 00000074
[ 679.814457] IP: [<de93b5bf>] picolcd_led_set_brightness+0x1f/0xb0 [hid_picolcd]
[ 679.814457] *pde = 00000000
[ 679.814457] Oops: 0000 [#1]
[ 679.814457] Modules linked in: hid_picolcd fb_sys_fops sysimgblt sysfillrect syscopyarea drm_kms_helper nfs lockd nfs_acl sunrpc [last unloaded: hid_picolcd]
[ 679.814457]
[ 679.814457] Pid: 272, comm: khubd Not tainted 3.5.0-jupiter-00006-g463a4c0 #1 NVIDIA Corporation. nFORCE-MCP/MS-6373
[ 679.814457] EIP: 0060:[<de93b5bf>] EFLAGS: 00010246 CPU: 0
[ 679.814457] EIP is at picolcd_led_set_brightness+0x1f/0xb0 [hid_picolcd]
[ 679.814457] EAX: 00000000 EBX: d9f0c4e0 ECX: 00000000 EDX: 00000000
[ 679.814457] ESI: 00000000 EDI: dd6b79c0 EBP: dd4f7d90 ESP: dd4f7d80
[ 679.814457] DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
[ 679.814457] CR0: 8005003b CR2: 00000074 CR3: 1d74e000 CR4: 000007d0
[ 679.814457] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 679.814457] DR6: ffff0ff0 DR7: 00000400
[ 679.814457] Process khubd (pid: 272, ti=dd4f6000 task=dd442470 task.ti=dd4f6000)
[ 679.814457] Stack:
[ 679.814457] 1d6c3300 d9f0c4e0 d9f0c4e0 dd6b79c0 dd4f7da0 c132912a 00000000 d9f0c4e0
[ 679.814457] dd4f7dac c132935d 00000000 dd4f7dc0 de93b847 dd6b79c0 00000282 c700ecc8
[ 679.814457] dd4f7ddc de93924f 00000004 c700ecc8 c700e060 c700ecbc c15ee300 dd4f7dec
[ 679.814457] Call Trace:
[ 679.814457] [<c132912a>] led_brightness_set+0x2a/0x30
[ 679.814457] [<c132935d>] led_classdev_unregister+0xd/0x50
[ 679.814457] [<de93b847>] picolcd_exit_leds+0x27/0x40 [hid_picolcd]
[ 679.814457] [<de93924f>] picolcd_remove+0xbf/0x110 [hid_picolcd]
[ 679.814457] [<c132c5dd>] hid_device_remove+0x3d/0x80
[ 679.814457] [<c1294126>] __device_release_driver+0x56/0xa0
[ 679.814457] [<c1294190>] device_release_driver+0x20/0x30
[ 679.814457] [<c1293bbf>] bus_remove_device+0x9f/0xc0
[ 679.814457] [<c1291a1d>] device_del+0xdd/0x150
[ 679.814457] [<c132c205>] hid_destroy_device+0x25/0x60
[ 679.814457] [<c13368cb>] usbhid_disconnect+0x1b/0x40
[ 679.814457] [<c12f4976>] usb_unbind_interface+0x46/0x170
[ 679.814457] [<c1294126>] __device_release_driver+0x56/0xa0
[ 679.814457] [<c1294190>] device_release_driver+0x20/0x30
[ 679.814457] [<c1293bbf>] bus_remove_device+0x9f/0xc0
[ 679.814457] [<c1291a1d>] device_del+0xdd/0x150
[ 679.814457] [<c12f2975>] usb_disable_device+0x85/0x1a0
[ 679.814457] [<c1053146>] ? __cond_resched+0x16/0x30
[ 679.814457] [<c12ebdb0>] usb_disconnect+0x80/0xf0
[ 679.814457] [<c12ed61f>] hub_thread+0x3df/0x1030
[ 679.814457] [<c10484a0>] ? wake_up_bit+0x30/0x30
[ 679.814457] [<c12ed240>] ? usb_remote_wakeup+0x40/0x40
[ 679.814457] [<c1047f94>] kthread+0x74/0x80
[ 679.814457] [<c1047f20>] ? flush_kthread_worker+0x90/0x90
[ 679.814457] [<c140e33e>] kernel_thread_helper+0x6/0xd
[ 679.814457] Code: e0 25 00 e0 ff ff ff 48 14 eb 99 90 55 89 e5 83 ec 10 89 5d f4 89 75 f8 89 c3 89 7d fc 8b 40 1c 89 d6 8b 00 e8 13 89 95 e2 31 c9 <39> 5c 88 74 74 13 41 83 f9 08 75 f4 8b 5d f4 8b 75 f8 8b 7d fc
[ 679.814457] EIP: [<de93b5bf>] picolcd_led_set_brightness+0x1f/0xb0 [hid_picolcd] SS:ESP 0068:dd4f7d80
[ 679.814457] CR2: 0000000000000074
[ 680.116438] ---[ end trace 6f0d9d63bff280ff ]---
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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In order to make code maintenance easier, split the vairous
functions into individial files (this removes a bunch of #ifdefs).
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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