diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/819-uart-0007-MLK-15094-tty-serial-fsl_lpuart-check-dma_tx_in_prog.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/819-uart-0007-MLK-15094-tty-serial-fsl_lpuart-check-dma_tx_in_prog.patch | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/target/linux/layerscape/patches-5.4/819-uart-0007-MLK-15094-tty-serial-fsl_lpuart-check-dma_tx_in_prog.patch b/target/linux/layerscape/patches-5.4/819-uart-0007-MLK-15094-tty-serial-fsl_lpuart-check-dma_tx_in_prog.patch deleted file mode 100644 index 41271f9dfd..0000000000 --- a/target/linux/layerscape/patches-5.4/819-uart-0007-MLK-15094-tty-serial-fsl_lpuart-check-dma_tx_in_prog.patch +++ /dev/null @@ -1,29 +0,0 @@ -From 31a4e41820cdaad9d4c151beefe5ab0698f4865a Mon Sep 17 00:00:00 2001 -From: Fugang Duan <fugang.duan@nxp.com> -Date: Thu, 15 Jun 2017 16:48:31 +0800 -Subject: [PATCH] MLK-15094 tty: serial: fsl_lpuart: check dma_tx_in_progress - in callback - -There have a corner case that tx DMA .callback() is coming after -.flush_buffer(), then .callback() should check dma_tx_in_progress -flag and return in directly. - -Signed-off-by: Fugang Duan <fugang.duan@nxp.com> -Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com> ---- - drivers/tty/serial/fsl_lpuart.c | 4 ++++ - 1 file changed, 4 insertions(+) - ---- a/drivers/tty/serial/fsl_lpuart.c -+++ b/drivers/tty/serial/fsl_lpuart.c -@@ -505,6 +505,10 @@ static void lpuart_dma_tx_complete(void - unsigned long flags; - - spin_lock_irqsave(&sport->port.lock, flags); -+ if (!sport->dma_tx_in_progress) { -+ spin_unlock_irqrestore(&sport->port.lock, flags); -+ return; -+ } - - dma_unmap_sg(sport->port.dev, sgl, sport->dma_tx_nents, DMA_TO_DEVICE); - |