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Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0176-spi-bcm2835-fix-overflow-in-calculation-of-transfer-.patch')
-rw-r--r--target/linux/brcm2708/patches-4.1/0176-spi-bcm2835-fix-overflow-in-calculation-of-transfer-.patch53
1 files changed, 0 insertions, 53 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0176-spi-bcm2835-fix-overflow-in-calculation-of-transfer-.patch b/target/linux/brcm2708/patches-4.1/0176-spi-bcm2835-fix-overflow-in-calculation-of-transfer-.patch
deleted file mode 100644
index 7aa970d276..0000000000
--- a/target/linux/brcm2708/patches-4.1/0176-spi-bcm2835-fix-overflow-in-calculation-of-transfer-.patch
+++ /dev/null
@@ -1,53 +0,0 @@
-From 3604c2a5b623829c9127d312813f3427531ebfcd Mon Sep 17 00:00:00 2001
-From: Martin Sperl <kernel@martin.sperl.org>
-Date: Wed, 29 Jul 2015 07:34:10 +0000
-Subject: [PATCH 176/222] spi: bcm2835: fix overflow in calculation of transfer
- time
-
-This resulted in the use of polling mode when other approaches
-(dma or interrupts) would have been more appropriate.
-
-Happened for transfers longer than 477 bytes.
-
-Reported-by: Noralf Tronnes <noralf@tronnes.org>
-Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
-Signed-off-by: Mark Brown <broonie@kernel.org>
-(cherry picked from commit 0122a5183088e3117bb9c8fbe248914efb502f3f)
----
- drivers/spi/spi-bcm2835.c | 10 ++++++----
- 1 file changed, 6 insertions(+), 4 deletions(-)
-
---- a/drivers/spi/spi-bcm2835.c
-+++ b/drivers/spi/spi-bcm2835.c
-@@ -480,7 +480,7 @@ static int bcm2835_spi_transfer_one_poll
- struct spi_device *spi,
- struct spi_transfer *tfr,
- u32 cs,
-- unsigned long xfer_time_us)
-+ unsigned long long xfer_time_us)
- {
- struct bcm2835_spi *bs = spi_master_get_devdata(master);
- unsigned long timeout;
-@@ -531,7 +531,8 @@ static int bcm2835_spi_transfer_one(stru
- {
- struct bcm2835_spi *bs = spi_master_get_devdata(master);
- unsigned long spi_hz, clk_hz, cdiv;
-- unsigned long spi_used_hz, xfer_time_us;
-+ unsigned long spi_used_hz;
-+ unsigned long long xfer_time_us;
- u32 cs = bcm2835_rd(bs, BCM2835_SPI_CS);
-
- /* set clock */
-@@ -573,9 +574,10 @@ static int bcm2835_spi_transfer_one(stru
- bs->rx_len = tfr->len;
-
- /* calculate the estimated time in us the transfer runs */
-- xfer_time_us = tfr->len
-+ xfer_time_us = (unsigned long long)tfr->len
- * 9 /* clocks/byte - SPI-HW waits 1 clock after each byte */
-- * 1000000 / spi_used_hz;
-+ * 1000000;
-+ do_div(xfer_time_us, spi_used_hz);
-
- /* for short requests run polling*/
- if (xfer_time_us <= BCM2835_SPI_POLLING_LIMIT_US)