From: Bartosz Golaszewski <brgl@bgdev.pl> To: Sekhar Nori <nsekhar@ti.com>, Kevin Hilman <khilman@kernel.org>, Thomas Gleixner <tglx@linutronix.de>, Jason Cooper <jason@lakedaemon.net>, Marc Zyngier <marc.zyngier@arm.com>, David Lechner <david@lechnology.com> Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 19/37] ARM: davinci: aintc: request memory region before remapping it Date: Tue, 12 Feb 2019 11:38:17 +0100 [thread overview] Message-ID: <20190212103835.7768-20-brgl@bgdev.pl> (raw) In-Reply-To: <20190212103835.7768-1-brgl@bgdev.pl> From: Bartosz Golaszewski <bgolaszewski@baylibre.com> Add a missing call to request_mem_region() before calling ioremap() to make sure the region is not being used by anyone else. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> --- arch/arm/mach-davinci/irq.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/mach-davinci/irq.c b/arch/arm/mach-davinci/irq.c index 2afaf19dc46c..2b6943731af9 100644 --- a/arch/arm/mach-davinci/irq.c +++ b/arch/arm/mach-davinci/irq.c @@ -86,9 +86,18 @@ davinci_aintc_handle_irq(struct pt_regs *regs) void __init davinci_aintc_init(const struct davinci_aintc_config *config) { unsigned int irq_off, reg_off, prio, shift; + void __iomem *req; int ret, irq_base; const u8 *prios; + req = request_mem_region(config->reg.start, + resource_size(&config->reg), + "davinci-cp-intc"); + if (!req) { + pr_err("%s: register range busy\n", __func__); + return; + } + davinci_aintc_base = ioremap(config->reg.start, resource_size(&config->reg)); if (!davinci_aintc_base) { -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-02-12 10:44 UTC|newest] Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-02-12 10:37 [PATCH v3 00/37] ARM: davinci: modernize the irq support Bartosz Golaszewski 2019-02-12 10:37 ` [PATCH v3 01/37] input: davinci_keyscan: remove unnecessary includes Bartosz Golaszewski 2019-02-14 14:09 ` Sekhar Nori 2019-02-12 10:38 ` [PATCH v3 02/37] ARM: davinci: remove intc_host_map from davinci_soc_info struct Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 03/37] ARM: davinci: aintc: use irq domain Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 04/37] ARM: davinci: select GENERIC_IRQ_MULTI_HANDLER Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 05/37] ARM: davinci: remove davinci_intc_type Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 06/37] ARM: davinci: pull davinci_intc_base into the respective intc drivers Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 07/37] ARM: davinci: wrap HW interrupt numbers with a macro Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 08/37] ARM: davinci: select SPARSE_IRQ Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 09/37] ARM: davinci: make irqs.h a local header Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 10/37] ARM: davinci: aintc: drop GPL license boilerplate Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 11/37] ARM: davinci: aintc: wrap davinci_irq_init() with a helper Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 12/37] ARM: davinci: aintc: use a common prefix for symbols in the driver Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 13/37] ARM: davinci: aintc: drop the 00 prefix from register offsets Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 14/37] ARM: davinci: aintc: use readl/writel_relaxed() Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 15/37] irqchip: davinci-aintc: add a new config structure Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 16/37] ARM: davinci: aintc: use the new irqchip config structure in dm* SoCs Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 17/37] ARM: davinci: aintc: use the new config structure Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 18/37] ARM: davinci: aintc: unify error handling Bartosz Golaszewski 2019-02-12 10:38 ` Bartosz Golaszewski [this message] 2019-02-12 10:38 ` [PATCH v3 20/37] ARM: davinci: aintc: move timer-specific irq_set_handler() out of irq.c Bartosz Golaszewski 2019-02-14 10:57 ` Marc Zyngier 2019-02-14 12:44 ` Sekhar Nori 2019-02-14 12:56 ` Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 21/37] ARM: davinci: aintc: remove unnecessary includes Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 22/37] irqchip: davinci-aintc: move the driver to drivers/irqchip Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 23/37] ARM: davinci: cp-intc: remove cp_intc.h Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 24/37] ARM: davinci: cp-intc: add a wrapper around cp_intc_init() Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 25/37] irqchip: davinci-cp-intc: add a new config structure Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 26/37] ARM: davinci: cp-intc: add the new config structures for da8xx SoCs Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 27/37] ARM: davinci: cp-intc: use a common prefix for all symbols Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 28/37] ARM: davinci: cp-intc: convert all hex numbers to lowercase Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 29/37] ARM: davinci: cp-intc: use the new-style config structure Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 30/37] ARM: davinci: cp-intc: request the memory region before remapping it Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 31/37] ARM: davinci: cp-intc: improve coding style Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 32/37] ARM: davinci: cp-intc: unify error handling Bartosz Golaszewski 2019-02-14 11:11 ` Marc Zyngier 2019-02-12 10:38 ` [PATCH v3 33/37] ARM: davinci: cp-intc: use readl/writel_relaxed() Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 34/37] ARM: davinci: cp-intc: drop GPL license boilerplate Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 35/37] ARM: davinci: cp-intc: remove redundant comments Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 36/37] irqchip: davinci-cp-intc: move the driver to drivers/irqchip Bartosz Golaszewski 2019-02-12 10:38 ` [PATCH v3 37/37] ARM: davinci: remove intc related fields from davinci_soc_info Bartosz Golaszewski
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