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The functions backlight_device_unregister(), lcd_device_unregister() and
rc_unregister_device() test whether their argument is NULL and then
return immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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The basic API of rc-core used to be:
dev = rc_allocate_device();
dev->x = a;
dev->y = b;
dev->z = c;
rc_register_device();
which is a pretty common pattern in the kernel, after the introduction of
protocol arrays the API looks something like:
dev = rc_allocate_device();
dev->x = a;
rc_set_allowed_protocols(dev, RC_BIT_X);
dev->z = c;
rc_register_device();
There's no real need for the protocols to be an array, so change it
back to be consistent (and in preparation for the following patches).
[m.chehab@samsung.com: added missing changes at some files]
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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The allowed and enabled protocol masks need to be expanded to be per
filter type in order to support wakeup filter protocol selection. To
ease that process abstract access to the rc_dev::allowed_protos and
rc_dev::enabled_protocols members with inline functions.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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When picolcd is switched into bootloader mode (for FW flashing) make
sure not to try to dereference NULL-pointers of feature-devices during
unplug/unbind.
This fixes following BUG:
BUG: unable to handle kernel NULL pointer dereference at 00000298
IP: [<f811f56b>] picolcd_exit_framebuffer+0x1b/0x80 [hid_picolcd]
*pde = 00000000
Oops: 0000 [#1]
Modules linked in: hid_picolcd syscopyarea sysfillrect sysimgblt fb_sys_fops
CPU: 0 PID: 15 Comm: khubd Not tainted 3.11.0-rc7-00002-g50d62d4 #2
EIP: 0060:[<f811f56b>] EFLAGS: 00010292 CPU: 0
EIP is at picolcd_exit_framebuffer+0x1b/0x80 [hid_picolcd]
Call Trace:
[<f811d1ab>] picolcd_remove+0xcb/0x120 [hid_picolcd]
[<c1469b09>] hid_device_remove+0x59/0xc0
[<c13464ca>] __device_release_driver+0x5a/0xb0
[<c134653f>] device_release_driver+0x1f/0x30
[<c134603d>] bus_remove_device+0x9d/0xd0
[<c13439a5>] device_del+0xd5/0x150
[<c14696a4>] hid_destroy_device+0x24/0x60
[<c1474cbb>] usbhid_disconnect+0x1b/0x40
...
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Cc: stable@kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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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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Commit c003ab1bedf0 ("[media] rc-core: add separate defines for
protocol bitmaps and numbers") overlooked hid-picolcd.
This patch (against git.linuxtv.org/media_tree.git, branch
staging/for_v3.8) fixes the compilation breakage.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Smatch complains that the NULL checking in this function is not
consistent and could lead to a NULL dereference. The comments say that
we should return here if rc_dev is NULL so I've changed the test to
match the comment.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Implement support for picoLCD's CIR header using RC_CORE for decoding
the IR event stream.
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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