mvebu: remove linux 4.4 support

[openwrt/staging/lynxis/omap.git] / target / linux / mvebu / patches-4.4 / 110-pxa3xxx_revert_irq_thread.patch

diff --git a/target/linux/mvebu/patches-4.4/110-pxa3xxx_revert_irq_thread.patch b/target/linux/mvebu/patches-4.4/110-pxa3xxx_revert_irq_thread.patch
deleted file mode 100644 (file)
index 30da17d..0000000
--- a/target/linux/mvebu/patches-4.4/110-pxa3xxx_revert_irq_thread.patch
+++ /dev/null
@@ -1,69 +0,0 @@
-Revert "mtd: pxa3xx-nand: handle PIO in threaded interrupt"
-
-This reverts commit 24542257a3b987025d4b998ec2d15e556c98ad3f
-This upstream change has been causing spurious timeouts on accesses
-to the NAND flash if something else on the system is causing
-significant latency.
-
-Nothing guarantees that the thread will run in time, so the
-usual timeout is unreliable.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
-
---- a/drivers/mtd/nand/pxa3xx_nand.c
-+++ b/drivers/mtd/nand/pxa3xx_nand.c
-@@ -765,24 +765,11 @@ static void start_data_dma(struct pxa3xx
-               __func__, direction, info->dma_cookie, info->sg.length);
- }
- 
--static irqreturn_t pxa3xx_nand_irq_thread(int irq, void *data)
--{
--      struct pxa3xx_nand_info *info = data;
--
--      handle_data_pio(info);
--
--      info->state = STATE_CMD_DONE;
--      nand_writel(info, NDSR, NDSR_WRDREQ | NDSR_RDDREQ);
--
--      return IRQ_HANDLED;
--}
--
- static irqreturn_t pxa3xx_nand_irq(int irq, void *devid)
- {
-       struct pxa3xx_nand_info *info = devid;
-       unsigned int status, is_completed = 0, is_ready = 0;
-       unsigned int ready, cmd_done;
--      irqreturn_t ret = IRQ_HANDLED;
- 
-       if (info->cs == 0) {
-               ready           = NDSR_FLASH_RDY;
-@@ -824,8 +811,7 @@ static irqreturn_t pxa3xx_nand_irq(int i
-               } else {
-                       info->state = (status & NDSR_RDDREQ) ?
-                                     STATE_PIO_READING : STATE_PIO_WRITING;
--                      ret = IRQ_WAKE_THREAD;
--                      goto NORMAL_IRQ_EXIT;
-+                      handle_data_pio(info);
-               }
-       }
-       if (status & cmd_done) {
-@@ -870,7 +856,7 @@ static irqreturn_t pxa3xx_nand_irq(int i
-       if (is_ready)
-               complete(&info->dev_ready);
- NORMAL_IRQ_EXIT:
--      return ret;
-+      return IRQ_HANDLED;
- }
- 
- static inline int is_buf_blank(uint8_t *buf, size_t len)
-@@ -1849,9 +1835,7 @@ static int alloc_nand_resource(struct pl
-       /* initialize all interrupts to be disabled */
-       disable_int(info, NDSR_MASK);
- 
--      ret = request_threaded_irq(irq, pxa3xx_nand_irq,
--                                 pxa3xx_nand_irq_thread, IRQF_ONESHOT,
--                                 pdev->name, info);
-+      ret = request_irq(irq, pxa3xx_nand_irq, 0, pdev->name, info);
-       if (ret < 0) {
-               dev_err(&pdev->dev, "failed to request IRQ\n");
-               goto fail_free_buf;