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ARM: davinci: aintc: request memory region before remapping it

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Add a missing call to request_mem_region() before calling ioremap() to
make sure the region is not being used by anyone else.

Reviewed-by: David Lechner <david@lechnology.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
Bartosz Golaszewski 2019-02-14 15:52:13 +01:00 committed by Sekhar Nori
parent a6c0bba1fa
commit 882bed7298
1 changed files with 9 additions and 0 deletions
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9
arch/arm/mach-davinci/irq.c
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@ -86,9 +86,18 @@ davinci_aintc_handle_irq(struct pt_regs *regs)
void __init davinci_aintc_init(const struct davinci_aintc_config *config) void __init davinci_aintc_init(const struct davinci_aintc_config *config)
{ {
unsigned int irq_off, reg_off, prio, shift; unsigned int irq_off, reg_off, prio, shift;
void __iomem *req;
int ret, irq_base; int ret, irq_base;
const u8 *prios; 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, davinci_aintc_base = ioremap(config->reg.start,
resource_size(&config->reg)); resource_size(&config->reg));
if (!davinci_aintc_base) { if (!davinci_aintc_base) {