From: Greg Ungerer Date: Tue, 10 Jan 2006 06:59:04 +0000 (+1000) Subject: [PATCH] m68knommu: set irq priority/level different for each ColdFire serial port X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=082f2c1cc7aa7aabdbf5235b788ff42e10abb399;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git [PATCH] m68knommu: set irq priority/level different for each ColdFire serial port Set the hardware interrupt priority to a different value for each attached ColdFire serial port. According to the CPU documentation you should not use the same combination of level/priority on more than one device. People have reported odd serial port behavior with them set the same. Signed-off-by: Greg Ungerer Signed-off-by: Linus Torvalds --- diff --git a/drivers/serial/mcfserial.c b/drivers/serial/mcfserial.c index f2a51e61eec..d957a3a9edf 100644 --- a/drivers/serial/mcfserial.c +++ b/drivers/serial/mcfserial.c @@ -1516,7 +1516,7 @@ static void mcfrs_irqinit(struct mcf_serial *info) icrp = (volatile unsigned char *) (MCF_MBAR + MCFICM_INTC0 + MCFINTC_ICR0 + MCFINT_UART0 + info->line); - *icrp = 0x33; /* UART0 with level 6, priority 3 */ + *icrp = 0x30 + info->line; /* level 6, line based priority */ imrp = (volatile unsigned long *) (MCF_MBAR + MCFICM_INTC0 + MCFINTC_IMRL);