diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0450-tty-amba-pl011-allow-shared-interrupt.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0450-tty-amba-pl011-allow-shared-interrupt.patch | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0450-tty-amba-pl011-allow-shared-interrupt.patch b/target/linux/brcm2708/patches-4.19/950-0450-tty-amba-pl011-allow-shared-interrupt.patch new file mode 100644 index 0000000000..5d316bd314 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0450-tty-amba-pl011-allow-shared-interrupt.patch @@ -0,0 +1,28 @@ +From ea75a716955e85ad076dd2861ca9e41def406a1b Mon Sep 17 00:00:00 2001 +From: Doug Berger <opendmb@gmail.com> +Date: Mon, 13 May 2019 20:59:45 +0200 +Subject: [PATCH] tty: amba-pl011: allow shared interrupt + +The PL011 register space includes all necessary status bits to +determine whether a device instance requires handling in response +to an interrupt. Therefore, multiple instances of the device could +be serviced by a single shared interrupt, which is the case on BCM7211. + +Signed-off-by: Doug Berger <opendmb@gmail.com> +Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> +--- + drivers/tty/serial/amba-pl011.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +--- a/drivers/tty/serial/amba-pl011.c ++++ b/drivers/tty/serial/amba-pl011.c +@@ -1733,7 +1733,8 @@ static int pl011_allocate_irq(struct uar + { + pl011_write(uap->im, uap, REG_IMSC); + +- return request_irq(uap->port.irq, pl011_int, 0, "uart-pl011", uap); ++ return request_irq(uap->port.irq, pl011_int, IRQF_SHARED, "uart-pl011", ++ uap); + } + + /* |