ipq806x: rename patches in patches-3.18

[openwrt/svn-archive/archive.git] / target / linux / ipq806x / patches / 003-spi-qup-Ensure-done-detection.patch

diff --git a/target/linux/ipq806x/patches/003-spi-qup-Ensure-done-detection.patch b/target/linux/ipq806x/patches/003-spi-qup-Ensure-done-detection.patch
deleted file mode 100644 (file)
index 7052227..0000000
--- a/target/linux/ipq806x/patches/003-spi-qup-Ensure-done-detection.patch
+++ /dev/null
@@ -1,56 +0,0 @@
-From 4faba89e3ffbb1c5f6232651375b9b3212b50f02 Mon Sep 17 00:00:00 2001
-From: Andy Gross <agross@codeaurora.org>
-Date: Thu, 15 Jan 2015 17:56:02 -0800
-Subject: [PATCH] spi: qup: Ensure done detection
-
-This patch fixes an issue where a SPI transaction has completed, but the done
-condition is missed.  This occurs because at the time of interrupt the
-MAX_INPUT_DONE_FLAG is not asserted.  However, in the process of reading blocks
-of data from the FIFO, the last portion of data comes in.
-
-The opflags read at the beginning of the irq handler no longer matches the
-current opflag state.  To get around this condition, the block read function
-should update the opflags so that done detection is correct after the return.
-
-Change-Id: If109e0eeb432f96000d765c4b34dbb2269f8093f
-Signed-off-by: Andy Gross <agross@codeaurora.org>
----
- drivers/spi/spi-qup.c | 12 +++++++-----
- 1 file changed, 7 insertions(+), 5 deletions(-)
-
---- a/drivers/spi/spi-qup.c
-+++ b/drivers/spi/spi-qup.c
-@@ -298,7 +298,7 @@ static void spi_qup_fifo_write(struct sp
- }
- 
- static void spi_qup_block_read(struct spi_qup *controller,
--      struct spi_transfer *xfer)
-+      struct spi_transfer *xfer, u32 *opflags)
- {
-       u32 data;
-       u32 reads_per_blk = controller->in_blk_sz >> 2;
-@@ -327,10 +327,12 @@ static void spi_qup_block_read(struct sp
- 
-       /*
-        * Due to extra stickiness of the QUP_OP_IN_SERVICE_FLAG during block
--       * reads, it has to be cleared again at the very end
-+       * reads, it has to be cleared again at the very end.  However, be sure
-+       * to refresh opflags value because MAX_INPUT_DONE_FLAG may now be
-+       * present and this is used to determine if transaction is complete
-        */
--      if (readl_relaxed(controller->base + QUP_OPERATIONAL) &
--              QUP_OP_MAX_INPUT_DONE_FLAG)
-+      *opflags = readl_relaxed(controller->base + QUP_OPERATIONAL);
-+      if (*opflags & QUP_OP_MAX_INPUT_DONE_FLAG)
-               writel_relaxed(QUP_OP_IN_SERVICE_FLAG,
-                       controller->base + QUP_OPERATIONAL);
- 
-@@ -633,7 +635,7 @@ static irqreturn_t spi_qup_qup_irq(int i
-       if (!controller->use_dma) {
-               if (opflags & QUP_OP_IN_SERVICE_FLAG) {
-                       if (opflags & QUP_OP_IN_BLOCK_READ_REQ)
--                              spi_qup_block_read(controller, xfer);
-+                              spi_qup_block_read(controller, xfer, &opflags);
-                       else
-                               spi_qup_fifo_read(controller, xfer);
-               }