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authorLinus Torvalds <torvalds@linux-foundation.org>2009-05-15 08:05:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-05-15 08:05:02 -0700
commit662f11cf2aaedd3d5fe6afbec78ba3288fd0c4ca (patch)
treef491041c3f04e5164682bfe67f75aa5fced33609 /drivers/serial
parent1f71ebedb3f8ce9108978168759c8551d873a912 (diff)
parentad892a63f64888a7b05eb2046febbcfbdd54dfcc (diff)
downloadop-kernel-dev-662f11cf2aaedd3d5fe6afbec78ba3288fd0c4ca.zip
op-kernel-dev-662f11cf2aaedd3d5fe6afbec78ba3288fd0c4ca.tar.gz
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Fix PCI ROM access powerpc/pseries: Really fix the oprofile CPU type on pseries serial/nwpserial: Fix wrong register read address and add interrupt acknowledge. powerpc/cell: Make ptcal more reliable powerpc: Allow mem=x cmdline to work with 4G+ powerpc/mpic: Fix incorrect allocation of interrupt rev-map powerpc: Fix oprofile sampling of marked events on POWER7 powerpc/iseries: Fix pci breakage due to bad dma_data initialization powerpc: Fix mktree build error on Mac OS X host powerpc/virtex: Fix duplicate level irq events. powerpc/virtex: Add uImage to the default images list powerpc/boot: add simpleImage.* to clean-files list powerpc/8xx: Update defconfigs powerpc/embedded6xx: Update defconfigs powerpc/86xx: Update defconfigs powerpc/85xx: Update defconfigs powerpc/83xx: Update defconfigs powerpc/fsl_soc: Remove mpc83xx_wdt_init, again
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/nwpserial.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/serial/nwpserial.c b/drivers/serial/nwpserial.c
index 32f3eaf..9e150b1 100644
--- a/drivers/serial/nwpserial.c
+++ b/drivers/serial/nwpserial.c
@@ -145,11 +145,13 @@ static irqreturn_t nwpserial_interrupt(int irq, void *dev_id)
ch = dcr_read(up->dcr_host, UART_RX);
if (up->port.ignore_status_mask != NWPSERIAL_STATUS_RXVALID)
tty_insert_flip_char(tty, ch, TTY_NORMAL);
- } while (dcr_read(up->dcr_host, UART_RX) & UART_LSR_DR);
+ } while (dcr_read(up->dcr_host, UART_LSR) & UART_LSR_DR);
tty_flip_buffer_push(tty);
ret = IRQ_HANDLED;
+ /* clear interrupt */
+ dcr_write(up->dcr_host, UART_IIR, 1);
out:
spin_unlock(&up->port.lock);
return ret;
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