From 0a6d38795a405c49ea0012f04173613382def58c Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Wed, 2 Apr 2014 22:21:04 +0800 Subject: spi: Always check complete callback before calling it Since commit 1e25cd4729bd "spi: Do not require a completion", this checking is required to prevent NULL pointer dereference. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- drivers/spi/spi-fsl-espi.c | 3 ++- drivers/spi/spi-fsl-spi.c | 3 ++- drivers/spi/spi-mpc512x-psc.c | 3 ++- drivers/spi/spi-mpc52xx-psc.c | 3 ++- drivers/spi/spi-mpc52xx.c | 6 ++++-- drivers/spi/spi-sh.c | 6 ++++-- drivers/spi/spi-txx9.c | 3 ++- 7 files changed, 18 insertions(+), 9 deletions(-) (limited to 'drivers/spi') diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c index 428dc7a6b62e..e8e3d34bab07 100644 --- a/drivers/spi/spi-fsl-espi.c +++ b/drivers/spi/spi-fsl-espi.c @@ -446,7 +446,8 @@ static void fsl_espi_do_one_msg(struct spi_message *m) m->actual_length = espi_trans.actual_length; m->status = espi_trans.status; - m->complete(m->context); + if (m->complete) + m->complete(m->context); } static int fsl_espi_setup(struct spi_device *spi) diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c index 119f7af94537..f2af3eb3ceb7 100644 --- a/drivers/spi/spi-fsl-spi.c +++ b/drivers/spi/spi-fsl-spi.c @@ -404,7 +404,8 @@ static void fsl_spi_do_one_msg(struct spi_message *m) } m->status = status; - m->complete(m->context); + if (m->complete) + m->complete(m->context); if (status || !cs_change) { ndelay(nsecs); diff --git a/drivers/spi/spi-mpc512x-psc.c b/drivers/spi/spi-mpc512x-psc.c index 5032141eeeec..8eee745e8471 100644 --- a/drivers/spi/spi-mpc512x-psc.c +++ b/drivers/spi/spi-mpc512x-psc.c @@ -301,7 +301,8 @@ static int mpc512x_psc_spi_msg_xfer(struct spi_master *master, } m->status = status; - m->complete(m->context); + if (m->complete) + m->complete(m->context); if (status || !cs_change) mpc512x_psc_spi_deactivate_cs(spi); diff --git a/drivers/spi/spi-mpc52xx-psc.c b/drivers/spi/spi-mpc52xx-psc.c index 00ba910ab302..d761bc0dc5ce 100644 --- a/drivers/spi/spi-mpc52xx-psc.c +++ b/drivers/spi/spi-mpc52xx-psc.c @@ -248,7 +248,8 @@ static void mpc52xx_psc_spi_work(struct work_struct *work) } m->status = status; - m->complete(m->context); + if (m->complete) + m->complete(m->context); if (status || !cs_change) mpc52xx_psc_spi_deactivate_cs(spi); diff --git a/drivers/spi/spi-mpc52xx.c b/drivers/spi/spi-mpc52xx.c index 7c675fe83101..a0de12ac1deb 100644 --- a/drivers/spi/spi-mpc52xx.c +++ b/drivers/spi/spi-mpc52xx.c @@ -235,7 +235,8 @@ static int mpc52xx_spi_fsmstate_transfer(int irq, struct mpc52xx_spi *ms, dev_err(&ms->master->dev, "mode fault\n"); mpc52xx_spi_chipsel(ms, 0); ms->message->status = -EIO; - ms->message->complete(ms->message->context); + if (ms->message->complete) + ms->message->complete(ms->message->context); ms->state = mpc52xx_spi_fsmstate_idle; return FSM_CONTINUE; } @@ -289,7 +290,8 @@ mpc52xx_spi_fsmstate_wait(int irq, struct mpc52xx_spi *ms, u8 status, u8 data) ms->msg_count++; mpc52xx_spi_chipsel(ms, 0); ms->message->status = 0; - ms->message->complete(ms->message->context); + if (ms->message->complete) + ms->message->complete(ms->message->context); ms->state = mpc52xx_spi_fsmstate_idle; return FSM_CONTINUE; } diff --git a/drivers/spi/spi-sh.c b/drivers/spi/spi-sh.c index f6f2c7010177..03edf5ed0e9f 100644 --- a/drivers/spi/spi-sh.c +++ b/drivers/spi/spi-sh.c @@ -322,7 +322,8 @@ static void spi_sh_work(struct work_struct *work) spin_lock_irqsave(&ss->lock, flags); mesg->status = 0; - mesg->complete(mesg->context); + if (mesg->complete) + mesg->complete(mesg->context); } clear_fifo(ss); @@ -340,7 +341,8 @@ static void spi_sh_work(struct work_struct *work) error: mesg->status = ret; - mesg->complete(mesg->context); + if (mesg->complete) + mesg->complete(mesg->context); spi_sh_clear_bit(ss, SPI_SH_SSA | SPI_SH_SSDB | SPI_SH_SSD, SPI_SH_CR1); diff --git a/drivers/spi/spi-txx9.c b/drivers/spi/spi-txx9.c index 6191ced514b2..57a14977101c 100644 --- a/drivers/spi/spi-txx9.c +++ b/drivers/spi/spi-txx9.c @@ -265,7 +265,8 @@ static void txx9spi_work_one(struct txx9spi *c, struct spi_message *m) exit: m->status = status; - m->complete(m->context); + if (m->complete) + m->complete(m->context); /* normally deactivate chipselect ... unless no error and * cs_change has hinted that the next message will probably -- cgit v1.2.3 From a6f936db640f56066d0728bc135c1acd4cd9e56e Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sat, 29 Mar 2014 21:37:44 +0800 Subject: spi: omap2-mcspi: Convert to use devm_kcalloc This saves a few unwind code and return proper error if devm_kcalloc fails. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- drivers/spi/spi-omap2-mcspi.c | 26 +++++++++----------------- 1 file changed, 9 insertions(+), 17 deletions(-) (limited to 'drivers/spi') diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index a72127f08e39..f664212fb4ed 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -1356,12 +1356,13 @@ static int omap2_mcspi_probe(struct platform_device *pdev) INIT_LIST_HEAD(&mcspi->ctx.cs); - mcspi->dma_channels = kcalloc(master->num_chipselect, - sizeof(struct omap2_mcspi_dma), - GFP_KERNEL); - - if (mcspi->dma_channels == NULL) + mcspi->dma_channels = devm_kcalloc(&pdev->dev, master->num_chipselect, + sizeof(struct omap2_mcspi_dma), + GFP_KERNEL); + if (mcspi->dma_channels == NULL) { + status = -ENOMEM; goto free_master; + } for (i = 0; i < master->num_chipselect; i++) { char *dma_rx_ch_name = mcspi->dma_channels[i].dma_rx_ch_name; @@ -1403,7 +1404,7 @@ static int omap2_mcspi_probe(struct platform_device *pdev) } if (status < 0) - goto dma_chnl_free; + goto free_master; pm_runtime_use_autosuspend(&pdev->dev); pm_runtime_set_autosuspend_delay(&pdev->dev, SPI_AUTOSUSPEND_TIMEOUT); @@ -1421,8 +1422,6 @@ static int omap2_mcspi_probe(struct platform_device *pdev) disable_pm: pm_runtime_disable(&pdev->dev); -dma_chnl_free: - kfree(mcspi->dma_channels); free_master: spi_master_put(master); return status; @@ -1430,19 +1429,12 @@ free_master: static int omap2_mcspi_remove(struct platform_device *pdev) { - struct spi_master *master; - struct omap2_mcspi *mcspi; - struct omap2_mcspi_dma *dma_channels; - - master = platform_get_drvdata(pdev); - mcspi = spi_master_get_devdata(master); - dma_channels = mcspi->dma_channels; + struct spi_master *master = platform_get_drvdata(pdev); + struct omap2_mcspi *mcspi = spi_master_get_devdata(master); pm_runtime_put_sync(mcspi->dev); pm_runtime_disable(&pdev->dev); - kfree(dma_channels); - return 0; } -- cgit v1.2.3 From 058f11c85126e3d77b7f676674d31c803582f2b4 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Mon, 7 Apr 2014 16:15:45 +0200 Subject: spi: qup: Depend on ARCH_QCOM Commit 8fc1b0f87d9f ("ARM: qcom: Split Qualcomm support into legacy and multiplatform") removed Kconfig symbol ARCH_MSM_DT. But that commit left one (optional) dependency on ARCH_MSM_DT untouched. Three Kconfig symbols used to depend on ARCH_MSM_DT: ARCH_MSM8X60, ARCH_MSM8960, and ARCH_MSM8974. These three symbols now depend on ARCH_QCOM. So it appears this driver needs to depend on ARCH_QCOM too. Signed-off-by: Paul Bolle Reviewed-by: Stephen Boyd Signed-off-by: Mark Brown --- drivers/spi/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/spi') diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index efe1960af2b3..60f2b41c7310 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -383,7 +383,7 @@ config SPI_RSPI config SPI_QUP tristate "Qualcomm SPI controller with QUP interface" - depends on ARCH_MSM_DT || (ARM && COMPILE_TEST) + depends on ARCH_QCOM || (ARM && COMPILE_TEST) help Qualcomm Universal Peripheral (QUP) core is an AHB slave that provides a common data path (an output FIFO and an input FIFO) -- cgit v1.2.3