kernel/drivers/base/regmap/regmap-irq.c, branch linux-4.1.y

regmap-irq: set IRQF_ONESHOT flag to ensure IRQ request

2015-02-14T05:26:36Z

Since commit 1c6c69525b40eb76de8adf039409722015927dc3 ("genirq: Reject bogus threaded irq requests") threaded IRQs without a primary handler need to be requested with IRQF_ONESHOT, otherwise the request will fail. The %irq_flags flag is used to request the threaded IRQ and is also a parameter of the caller. Hence, we cannot be sure that IRQF_ONESHOT is set. This change avoids the potentially missing flag by setting IRQF_ONESHOT when requesting the threaded IRQ. Generated by: scripts/coccinelle/misc/irqf_oneshot.cocci Signed-off-by: Valentin Rothberg Signed-off-by: Mark Brown

regmap: irq: Fix possible ZERO_SIZE_PTR pointer dereferencing error.

2014-05-26T15:37:04Z

Since we cannot make sure the 'chip->num_regs' will always be none zero from the users, and then if 'chip->num_regs' equals to zero by mistake or other reasons, the kzalloc() will return ZERO_SIZE_PTR, which equals to ((void *)16). So this patch fix this with just checking the 'chip->num_regs' before calling kzalloc(). This also sorts the header files in alphabetical order at the same time. Signed-off-by: Xiubo Li Signed-off-by: Mark Brown

regmap: irq: Set data pointer only on regmap_add_irq_chip success

2014-03-13T21:47:36Z

After setting the 'data' pointer (wchich is returned to the caller for freeing later) the regmap_add_irq_chip() could still fail for various reasons (ENOMEM, regmap_read or regmap_write failure). In such case the memory under 'data' was freed in error path and error value was returned but the 'data' variable was not changed. This could lead to errors if the caller passed such 'data' to regmap_del_irq_chip(). The 'data' pointer should be changed atomically from the caller perspective - set it only on regmap_add_irq_chip() success. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Mark Brown

regmap: irq: Remove domain on exit

2014-02-03T12:17:10Z

irqdomain now supports removal of domains on exit so we can properly clean up on deletion of a regmap irqchip. Signed-off-by: Mark Brown

regmap: irq: Allow using zero value for ack_base

2013-12-16T20:50:13Z

In some cases, clear interrupt register may be at address 0. This patch allows to use such configurations by adding additional configuration bit to indicate this. [With doc fix from Levente Kurusa -- broonie] Signed-off-by: Alexander Shiyan Signed-off-by: Mark Brown

regmap: irq: clear status when disable irq

2013-10-22T12:28:08Z

clear the status bit if the mask register doesn't prevent the chip level irq from being asserted OR in the following sequence, there will be irq storm happens: 1) interrupt is triggered; 2) another thread disables it(the mask bit is set); 3) _Then_ the interrupt thread is not ACKed(the status bit is not cleared), and it's ignored; 4) if the irq is still asserted because of the uncleared status bit, the irq storm happens; Signed-off-by: Yi Zhang Signed-off-by: Mark Brown

regmap: irq: Allow to acknowledge masked interrupts during initialization

2013-07-23T19:39:12Z

In case the hardware interrupt mask register does not prevent the chip level irq from being asserted by the corresponding interrupt status bit, already set interrupt bits should to be cleared once after masking them during initialization. Add a flag to let drivers enable this behavior. Signed-off-by: Philipp Zabel Signed-off-by: Mark Brown

regmap: irq: Clarify error message when we fail to request primary IRQ

2013-03-19T10:50:56Z

Display the name for the chip rather than just the primary IRQ so it is clearer what exactly has failed. Signed-off-by: Mark Brown

regmap: irq: call pm_runtime_put in pm_runtime_get_sync failed case

2013-03-01T06:54:16Z

Even in failed case of pm_runtime_get_sync, the usage_count is incremented. In order to keep the usage_count with correct value and runtime power management to behave correctly, call pm_runtime_put(_sync) in such case. Signed-off-by Liu Chuansheng Signed-off-by: Li Fei Signed-off-by: Mark Brown

regmap: irq: Support wake IRQ mask inversion

2013-01-04T20:53:44Z

Support devices which have an enable rather than mask register for wake sources. Signed-off-by: Mark Brown