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* irqchip/qcom: Fix check for spurious interruptsAgustin Vega-Frias2018-05-021-2/+2
| | | | | | | | | | | | | | | | | | | | | When the interrupts for a combiner span multiple registers it must be checked if any interrupts have been asserted on each register before checking for spurious interrupts. Checking each register seperately leads to false positive warnings. [ tglx: Massaged changelog ] Fixes: f20cc9b00c7b ("irqchip/qcom: Add IRQ combiner driver") Signed-off-by: Agustin Vega-Frias <agustinv@codeaurora.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: timur@codeaurora.org Cc: linux-arm-kernel@lists.infradead.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/1525184090-26143-1-git-send-email-agustinv@codeaurora.org
* irqchip/qcom: Fix u32 comparison with value less than zeroColin Ian King2017-11-231-1/+1
| | | | | | | | | | | | | | The comparison of u32 nregs being less than zero is never true since nregs is unsigned. Fix this by making nregs a signed integer. Fixes: f20cc9b00c7b ("irqchip/qcom: Add IRQ combiner driver") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kernel-janitors@vger.kernel.org Cc: Jason Cooper <jason@lakedaemon.net> Link: https://lkml.kernel.org/r/20171117183553.2739-1-colin.king@canonical.com
* irqchip/qcom: Use builtin_platform_driver to simplify the codeWei Yongjun2017-06-221-6/+1
| | | | | | | Use the builtin_platform_driver() macro to make the code simpler. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
* irqchip/qcom: Fix error handlingChristophe JAILLET2017-02-191-2/+2
| | | | | | | | | | | | | 'devm_ioremap()' returns NULL on error, not an error pointer. Fixes: f20cc9b00c7b ("irqchip/qcom: Add IRQ combiner driver") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Cc: marc.zyngier@arm.com Cc: kernel-janitors@vger.kernel.org Cc: jason@lakedaemon.net Link: http://lkml.kernel.org/r/20170218083434.2289-1-christophe.jaillet@wanadoo.fr Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* irqchip/qcom: Add IRQ combiner driverAgustin Vega-Frias2017-02-031-0/+296
Driver for interrupt combiners in the Top-level Control and Status Registers (TCSR) hardware block in Qualcomm Technologies chips. An interrupt combiner in this block combines a set of interrupts by OR'ing the individual interrupt signals into a summary interrupt signal routed to a parent interrupt controller, and provides read- only, 32-bit registers to query the status of individual interrupts. The status bit for IRQ n is bit (n % 32) within register (n / 32) of the given combiner. Thus, each combiner can be described as a set of register offsets and the number of IRQs managed. Signed-off-by: Agustin Vega-Frias <agustinv@codeaurora.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>