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authorLars-Peter Clausen <lars@metafoo.de>2021-12-05 14:13:49 +0300
committerMathieu Poirier <mathieu.poirier@linaro.org>2021-12-06 20:17:44 +0300
commitc768968f134b9e7ab8a584ad19030a8d2c7eca2f (patch)
treeff3c4b0c6e3184c9067964cc0ecdde9ae2e979fa /drivers/remoteproc
parentb20dc021ba5a813fec6dd66bb78a658e58cfce8d (diff)
downloadlinux-c768968f134b9e7ab8a584ad19030a8d2c7eca2f.tar.xz
remoteproc: ingenic: Request IRQ disabled
The ingenic remoteproc driver requests its IRQ and then immediately disables it. The disable is necessary since irq_request() normally enables the IRQ. But there is a new flag IRQF_NO_AUTOEN that when specified keeps the IRQ disabled. Use this new flag rather than calling disable_irq(). This slightly reduce the boilerplate code and also avoids a theoretical race condition where the IRQ could fire between irq_request() and disable_irq(). Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20211205111349.51213-1-lars@metafoo.de Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'drivers/remoteproc')
-rw-r--r--drivers/remoteproc/ingenic_rproc.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/remoteproc/ingenic_rproc.c b/drivers/remoteproc/ingenic_rproc.c
index a356738160a4..9902cce28692 100644
--- a/drivers/remoteproc/ingenic_rproc.c
+++ b/drivers/remoteproc/ingenic_rproc.c
@@ -218,14 +218,13 @@ static int ingenic_rproc_probe(struct platform_device *pdev)
if (vpu->irq < 0)
return vpu->irq;
- ret = devm_request_irq(dev, vpu->irq, vpu_interrupt, 0, "VPU", rproc);
+ ret = devm_request_irq(dev, vpu->irq, vpu_interrupt, IRQF_NO_AUTOEN,
+ "VPU", rproc);
if (ret < 0) {
dev_err(dev, "Failed to request IRQ\n");
return ret;
}
- disable_irq(vpu->irq);
-
ret = devm_rproc_add(dev, rproc);
if (ret) {
dev_err(dev, "Failed to register remote processor\n");