kernel/drivers/hid/hid-picolcd_leds.c, branch linux-5.10.y

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265

2019-06-05T15:30:28Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 of the license this driver is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this software if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 8 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Richard Fontana Reviewed-by: Allison Randal Reviewed-by: Alexios Zavras Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141333.861653206@linutronix.de Signed-off-by: Greg Kroah-Hartman

HID: use to_hid_device()

2015-12-28T12:41:44Z

Use to_hid_device() instead of container_of(). Signed-off-by: Geliang Tang Signed-off-by: Jiri Kosina

HID: use hid_hw_request() instead of direct call to usbhid

2013-02-25T12:26:41Z

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 Reviewed-by: Mika Westerberg For the sensor-hub part: Tested-by: Mika Westerberg Signed-off-by: Jiri Kosina

HID: picoLCD: Improve unplug handling

2012-08-15T08:13:26Z

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 Signed-off-by: Jiri Kosina

HID: picoLCD: prevent NULL pointer dereference on unplug

2012-08-15T08:11:43Z

[ 679.807480] BUG: unable to handle kernel NULL pointer dereference at 00000074 [ 679.814457] IP: [] 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:[] 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] [] led_brightness_set+0x2a/0x30 [ 679.814457] [] led_classdev_unregister+0xd/0x50 [ 679.814457] [] picolcd_exit_leds+0x27/0x40 [hid_picolcd] [ 679.814457] [] picolcd_remove+0xbf/0x110 [hid_picolcd] [ 679.814457] [] hid_device_remove+0x3d/0x80 [ 679.814457] [] __device_release_driver+0x56/0xa0 [ 679.814457] [] device_release_driver+0x20/0x30 [ 679.814457] [] bus_remove_device+0x9f/0xc0 [ 679.814457] [] device_del+0xdd/0x150 [ 679.814457] [] hid_destroy_device+0x25/0x60 [ 679.814457] [] usbhid_disconnect+0x1b/0x40 [ 679.814457] [] usb_unbind_interface+0x46/0x170 [ 679.814457] [] __device_release_driver+0x56/0xa0 [ 679.814457] [] device_release_driver+0x20/0x30 [ 679.814457] [] bus_remove_device+0x9f/0xc0 [ 679.814457] [] device_del+0xdd/0x150 [ 679.814457] [] usb_disable_device+0x85/0x1a0 [ 679.814457] [] ? __cond_resched+0x16/0x30 [ 679.814457] [] usb_disconnect+0x80/0xf0 [ 679.814457] [] hub_thread+0x3df/0x1030 [ 679.814457] [] ? wake_up_bit+0x30/0x30 [ 679.814457] [] ? usb_remote_wakeup+0x40/0x40 [ 679.814457] [] kthread+0x74/0x80 [ 679.814457] [] ? flush_kthread_worker+0x90/0x90 [ 679.814457] [] 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: [] 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 Signed-off-by: Jiri Kosina

HID: picoLCD: split driver code

2012-08-15T08:08:57Z

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 Signed-off-by: Jiri Kosina