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ARM: davinci: cp-intc: request the memory region before remapping it 

Add a missing call to request_mem_region() before calling ioremap() to
make sure it's not been requested by another user.

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 15:52:24 +01:00 committed by Sekhar Nori
parent 6567954b8e
commit 9cf58a45d7
1 changed files with 9 additions and 0 deletions
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9
arch/arm/mach-davinci/cp_intc.c
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@ -164,6 +164,15 @@ davinci_cp_intc_do_init(const struct davinci_cp_intc_config *config,
{ {
unsigned int num_regs = BITS_TO_LONGS(config->num_irqs); unsigned int num_regs = BITS_TO_LONGS(config->num_irqs);
int offset, irq_base; int offset, irq_base;
void __iomem *req;
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 -EBUSY;
}
davinci_cp_intc_base = ioremap(config->reg.start, davinci_cp_intc_base = ioremap(config->reg.start,
resource_size(&config->reg)); resource_size(&config->reg));