kernel/drivers/input/serio/hp_sdc_mlc.c, branch linux-rolling-stable

hil/parisc: Disable HIL driver when it gets stuck

2020-11-05T10:51:54Z

commit 879bc2d27904354b98ca295b6168718e045c4aa2 upstream. When starting a HP machine with HIL driver but without an HIL keyboard or HIL mouse attached, it may happen that data written to the HIL loop gets stuck (e.g. because the transaction queue is full). Usually one will then have to reboot the machine because all you see is and endless output of: Transaction add failed: transaction already queued? In the higher layers hp_sdc_enqueue_transaction() is called to queued up a HIL packet. This function returns an error code, and this patch adds the necessary checks for this return code and disables the HIL driver if further packets can't be sent. Tested on a HP 730 and a HP 715/64 machine. Signed-off-by: Helge Deller Cc: Signed-off-by: Greg Kroah-Hartman

Input: hil_mlc - convert timeval to jiffies

2018-01-02T05:39:12Z

struct timeval is not y2038 safe, and what mlc->instart do is scheduling a task in a fixed timeout, so jiffies is the simplest choice here. In hilse_donode(), the expires in mod_timer equals jiffies + intimeout - (now - instart) If we use jiffies in 'now', the expires equals instart + intimeout So, all we need to do is that making sure expires is a future timestamp before passed it to mod_timer. [arnd: slightly simplified patch further] Link: https://lists.linaro.org/pipermail/y2038/2015-October/000937.html Signed-off-by: WEN Pingbo Signed-off-by: Arnd Bergmann Patchwork-Id: 10076615 Signed-off-by: Dmitry Torokhov

Input: serio HIL MLC - don't deref null, don't leak and return proper error

2010-11-20T21:38:18Z

While reviewing various users of kernel memory allocation functions I came across drivers/input/serio/hil_mlc.c::hil_mlc_register() and noticed that: - it calls kzalloc() but fails to check for a NULL return before use. - it makes several allocations and if one fails it doesn't free the previous ones. - It doesn't return -ENOMEM in the failed memory allocation case (it just crashes). This patch corrects all of the above and also reworks the only caller of this function that I could find (drivers/input/serio/hp_sdc_mlc.c::hp_sdc_mlc_out()) so that it now checks the return value of hil_mlc_register() and properly propagates it on failure and I also restructured the code to remove some labels and goto's to make it, IMHO nicer to read. Signed-off-by: Jesper Juhl Tested-by: Helge Deller Acked-by: Helge Deller Signed-off-by: Dmitry Torokhov

tree-wide: fix assorted typos all over the place

2009-12-04T14:39:55Z

That is "success", "unknown", "through", "performance", "[re|un]mapping" , "access", "default", "reasonable", "[con]currently", "temperature" , "channel", "[un]used", "application", "example","hierarchy", "therefore" , "[over|under]flow", "contiguous", "threshold", "enough" and others. Signed-off-by: André Goddard Rosa Signed-off-by: Jiri Kosina

parisc: hp_sdc_mlc.c - check return value of down_trylock()

2009-08-02T13:13:29Z

Signed-off-by: Helge Deller

Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next

2008-07-21T04:55:14Z

Input: hp_sdc_mlc.c - make a struct static

2008-06-30T13:38:33Z

This patch makes the needlessly global struct hp_sdc_mlc_priv_s static. Signed-off-by: Adrian Bunk Signed-off-by: Dmitry Torokhov

m68k: Some input drivers do not check the platform

2008-05-18T20:28:49Z

Some input drivers do not check whether they're actually running on the correct platform, causing multi-platform kernels to crash if they are not. Signed-off-by: Geert Uytterhoeven Signed-off-by: Linus Torvalds

Convert asm/semaphore.h users to linux/semaphore.h

2008-04-19T02:22:54Z

Signed-off-by: Matthew Wilcox

Input: HIL - fix rwlock recursion bug

2007-03-16T04:59:29Z

The following bug happens when insmoding hp_sdc_mlc.ko: HP SDC MLC: Registering the System Domain Controller's HIL MLC. BUG: rwlock recursion on CPU#0, hotplug/1814, 00854734 Backtrace: [<10267560>] _raw_write_lock+0x50/0x88 [<10104008>] _write_lock_irqsave+0x14/0x24 [<008537d4>] hp_sdc_mlc_out+0x38/0x25c [hp_sdc_mlc] [<0084ebd8>] hilse_donode+0x308/0x470 [hil_mlc] [<0084ed80>] hil_mlcs_process+0x40/0x6c [hil_mlc] [<10130f80>] tasklet_action+0x78/0xb8 [<10130cec>] __do_softirq+0x60/0xcc [<1010428c>] __lock_text_end+0x38/0x48 [<10108348>] do_cpu_irq_mask+0xf0/0x11c [<1010b068>] intr_return+0x0/0xc Signed-off-by: Helge Deller Signed-off-by: Dmitry Torokhov