From 3938c0d4cf60477ec776c9a7751226b06bb3c3c0 Mon Sep 17 00:00:00 2001 From: Nicholas Mc Guire Date: Sat, 21 Jul 2018 16:21:51 +0200 Subject: [PATCH] mtd: spi-nor: cadence-quadspi: fix timeout handling wait_for_completion_timeout returns an unsigned long not an int, so let's check its return value directly instead of storing it in ret, and avoid checking for negative values since this cannot happen. Signed-off-by: Nicholas Mc Guire Signed-off-by: Boris Brezillon --- drivers/mtd/spi-nor/cadence-quadspi.c | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) diff --git a/drivers/mtd/spi-nor/cadence-quadspi.c b/drivers/mtd/spi-nor/cadence-quadspi.c index c3f7aaa5d18f..7a19dae717fa 100644 --- a/drivers/mtd/spi-nor/cadence-quadspi.c +++ b/drivers/mtd/spi-nor/cadence-quadspi.c @@ -525,15 +525,14 @@ static int cqspi_indirect_read_execute(struct spi_nor *nor, u8 *rxbuf, reg_base + CQSPI_REG_INDIRECTRD); while (remaining > 0) { - ret = wait_for_completion_timeout(&cqspi->transfer_complete, - msecs_to_jiffies - (CQSPI_READ_TIMEOUT_MS)); + if (!wait_for_completion_timeout(&cqspi->transfer_complete, + msecs_to_jiffies(CQSPI_READ_TIMEOUT_MS))) + ret = -ETIMEDOUT; bytes_to_read = cqspi_get_rd_sram_level(cqspi); - if (!ret && bytes_to_read == 0) { + if (ret && bytes_to_read == 0) { dev_err(nor->dev, "Indirect read timeout, no bytes\n"); - ret = -ETIMEDOUT; goto failrd; } @@ -649,10 +648,8 @@ static int cqspi_indirect_write_execute(struct spi_nor *nor, loff_t to_addr, iowrite32_rep(cqspi->ahb_base, txbuf, DIV_ROUND_UP(write_bytes, 4)); - ret = wait_for_completion_timeout(&cqspi->transfer_complete, - msecs_to_jiffies - (CQSPI_TIMEOUT_MS)); - if (!ret) { + if (!wait_for_completion_timeout(&cqspi->transfer_complete, + msecs_to_jiffies(CQSPI_TIMEOUT_MS))) { dev_err(nor->dev, "Indirect write timeout\n"); ret = -ETIMEDOUT; goto failwr; @@ -986,9 +983,8 @@ static int cqspi_direct_read_execute(struct spi_nor *nor, u_char *buf, } dma_async_issue_pending(cqspi->rx_chan); - ret = wait_for_completion_timeout(&cqspi->rx_dma_complete, - msecs_to_jiffies(len)); - if (ret <= 0) { + if (!wait_for_completion_timeout(&cqspi->rx_dma_complete, + msecs_to_jiffies(len))) { dmaengine_terminate_sync(cqspi->rx_chan); dev_err(nor->dev, "DMA wait_for_completion_timeout\n"); ret = -ETIMEDOUT;