From 1a3f244a762a0b692d36bb2473a6760167833d53 Mon Sep 17 00:00:00 2001 From: Vignesh R Date: Tue, 29 Jan 2019 13:14:22 +0530 Subject: spi: ti-qspi: Fix mmap read when more than one CS in use commit 673c865efbdc5fec3cc525c46d71844d42c60072 upstream. Commit 4dea6c9b0b64 ("spi: spi-ti-qspi: add mmap mode read support") has has got order of parameter wrong when calling regmap_update_bits() to select CS for mmap access. Mask and value arguments are interchanged. Code will work on a system with single slave, but fails when more than one CS is in use. Fix this by correcting the order of parameters when calling regmap_update_bits(). Fixes: 4dea6c9b0b64 ("spi: spi-ti-qspi: add mmap mode read support") Cc: stable@vger.kernel.org Signed-off-by: Vignesh R Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- drivers/spi/spi-ti-qspi.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/spi/spi-ti-qspi.c') diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index caeac66a3977..4cb72a8e4646 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -457,8 +457,8 @@ static void ti_qspi_enable_memory_map(struct spi_device *spi) ti_qspi_write(qspi, MM_SWITCH, QSPI_SPI_SWITCH_REG); if (qspi->ctrl_base) { regmap_update_bits(qspi->ctrl_base, qspi->ctrl_reg, - MEM_CS_EN(spi->chip_select), - MEM_CS_MASK); + MEM_CS_MASK, + MEM_CS_EN(spi->chip_select)); } qspi->mmap_enabled = true; } @@ -470,7 +470,7 @@ static void ti_qspi_disable_memory_map(struct spi_device *spi) ti_qspi_write(qspi, 0, QSPI_SPI_SWITCH_REG); if (qspi->ctrl_base) regmap_update_bits(qspi->ctrl_base, qspi->ctrl_reg, - 0, MEM_CS_MASK); + MEM_CS_MASK, 0); qspi->mmap_enabled = false; } -- cgit v1.2.3