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authorArnaldo Carvalho de Melo <acme@redhat.com>2020-08-06 14:15:47 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2020-08-06 14:15:47 +0300
commit94fb1afb14c4f0ceb8c5508ddddac6819f662e95 (patch)
tree4988e5769dc7482caa7f441475ae31f50bbd37ef /drivers/uio/uio_pdrv_genirq.c
parentc4735d990268399da9133b0ad445e488ece009ad (diff)
parent47ec5303d73ea344e84f46660fff693c57641386 (diff)
downloadlinux-94fb1afb14c4f0ceb8c5508ddddac6819f662e95.tar.xz
Mgerge remote-tracking branch 'torvalds/master' into perf/core
To sync headers, for instance, in this case tools/perf was ahead of upstream till Linus merged tip/perf/core to get the PERF_RECORD_TEXT_POKE changes: Warning: Kernel ABI header at 'tools/include/uapi/linux/perf_event.h' differs from latest version at 'include/uapi/linux/perf_event.h' diff -u tools/include/uapi/linux/perf_event.h include/uapi/linux/perf_event.h Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'drivers/uio/uio_pdrv_genirq.c')
-rw-r--r--drivers/uio/uio_pdrv_genirq.c24
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c
index b60173bc93ce..63258b6accc4 100644
--- a/drivers/uio/uio_pdrv_genirq.c
+++ b/drivers/uio/uio_pdrv_genirq.c
@@ -20,6 +20,7 @@
#include <linux/stringify.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
+#include <linux/irq.h>
#include <linux/of.h>
#include <linux/of_platform.h>
@@ -171,6 +172,23 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev)
}
}
+ if (uioinfo->irq) {
+ struct irq_data *irq_data = irq_get_irq_data(uioinfo->irq);
+
+ /*
+ * If a level interrupt, dont do lazy disable. Otherwise the
+ * irq will fire again since clearing of the actual cause, on
+ * device level, is done in userspace
+ * irqd_is_level_type() isn't used since isn't valid until
+ * irq is configured.
+ */
+ if (irq_data &&
+ irqd_get_trigger_type(irq_data) & IRQ_TYPE_LEVEL_MASK) {
+ dev_dbg(&pdev->dev, "disable lazy unmask\n");
+ irq_set_status_flags(uioinfo->irq, IRQ_DISABLE_UNLAZY);
+ }
+ }
+
uiomem = &uioinfo->mem[0];
for (i = 0; i < pdev->num_resources; ++i) {
@@ -187,8 +205,10 @@ static int uio_pdrv_genirq_probe(struct platform_device *pdev)
}
uiomem->memtype = UIO_MEM_PHYS;
- uiomem->addr = r->start;
- uiomem->size = resource_size(r);
+ uiomem->addr = r->start & PAGE_MASK;
+ uiomem->offs = r->start & ~PAGE_MASK;
+ uiomem->size = (uiomem->offs + resource_size(r)
+ + PAGE_SIZE - 1) & PAGE_MASK;
uiomem->name = r->name;
++uiomem;
}