This patch is inpired by the patch for drvdata "device-core: Ensure drvdata = NULL when no driver is bound" (sha1: 0998d0631001288a5974afc0b2a5f568bcdecb4d)
Also it fixes all occurences in drivers. Signed-off-by: Michal Simek <michal.si...@xilinx.com> --- This patch has been sent as RFC in this thread. http://lkml.org/lkml/2013/9/4/393 --- arch/arm/kernel/etm.c | 6 ------ drivers/amba/bus.c | 2 ++ drivers/dma/pl330.c | 3 --- drivers/input/serio/ambakmi.c | 2 -- drivers/mmc/host/mmci.c | 2 -- drivers/rtc/rtc-pl030.c | 2 -- drivers/rtc/rtc-pl031.c | 2 -- drivers/spi/spi-pl022.c | 1 - drivers/tty/serial/amba-pl010.c | 3 --- drivers/tty/serial/amba-pl011.c | 3 --- drivers/video/amba-clcd.c | 2 -- drivers/watchdog/sp805_wdt.c | 1 - 12 files changed, 2 insertions(+), 27 deletions(-) diff --git a/arch/arm/kernel/etm.c b/arch/arm/kernel/etm.c index 8ff0ecd..131a6ab 100644 --- a/arch/arm/kernel/etm.c +++ b/arch/arm/kernel/etm.c @@ -385,7 +385,6 @@ out: return ret; out_unmap: - amba_set_drvdata(dev, NULL); iounmap(t->etb_regs); out_release: @@ -398,8 +397,6 @@ static int etb_remove(struct amba_device *dev) { struct tracectx *t = amba_get_drvdata(dev); - amba_set_drvdata(dev, NULL); - iounmap(t->etb_regs); t->etb_regs = NULL; @@ -588,7 +585,6 @@ out: return ret; out_unmap: - amba_set_drvdata(dev, NULL); iounmap(t->etm_regs); out_release: @@ -601,8 +597,6 @@ static int etm_remove(struct amba_device *dev) { struct tracectx *t = amba_get_drvdata(dev); - amba_set_drvdata(dev, NULL); - iounmap(t->etm_regs); t->etm_regs = NULL; diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c index c670727..9762090 100644 --- a/drivers/amba/bus.c +++ b/drivers/amba/bus.c @@ -373,6 +373,7 @@ static int amba_probe(struct device *dev) if (ret == 0) break; + amba_set_drvdata(pcdev, NULL); pm_runtime_disable(dev); pm_runtime_set_suspended(dev); pm_runtime_put_noidle(dev); @@ -391,6 +392,7 @@ static int amba_remove(struct device *dev) pm_runtime_get_sync(dev); ret = drv->remove(pcdev); + amba_set_drvdata(pcdev, NULL); pm_runtime_put_noidle(dev); /* Undo the runtime PM settings in amba_probe() */ diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index a562d24..dfb2931 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -3029,8 +3029,6 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) return 0; probe_err3: - amba_set_drvdata(adev, NULL); - /* Idle the DMAC */ list_for_each_entry_safe(pch, _p, &pdmac->ddma.channels, chan.device_node) { @@ -3064,7 +3062,6 @@ static int pl330_remove(struct amba_device *adev) of_dma_controller_free(adev->dev.of_node); dma_async_device_unregister(&pdmac->ddma); - amba_set_drvdata(adev, NULL); /* Idle the DMAC */ list_for_each_entry_safe(pch, _p, &pdmac->ddma.channels, diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c index 4e2fd44..b7c206d 100644 --- a/drivers/input/serio/ambakmi.c +++ b/drivers/input/serio/ambakmi.c @@ -167,8 +167,6 @@ static int amba_kmi_remove(struct amba_device *dev) { struct amba_kmi_port *kmi = amba_get_drvdata(dev); - amba_set_drvdata(dev, NULL); - serio_unregister_port(kmi->io); clk_put(kmi->clk); iounmap(kmi->base); diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index c3785ed..07e17f1 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -1678,8 +1678,6 @@ static int mmci_remove(struct amba_device *dev) { struct mmc_host *mmc = amba_get_drvdata(dev); - amba_set_drvdata(dev, NULL); - if (mmc) { struct mmci_host *host = mmc_priv(mmc); diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c index 22bacdb..a804f75 100644 --- a/drivers/rtc/rtc-pl030.c +++ b/drivers/rtc/rtc-pl030.c @@ -153,8 +153,6 @@ static int pl030_remove(struct amba_device *dev) { struct pl030_rtc *rtc = amba_get_drvdata(dev); - amba_set_drvdata(dev, NULL); - writel(0, rtc->base + RTC_CR); free_irq(dev->irq[0], rtc); diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c index 0f0609b..c9ca86e 100644 --- a/drivers/rtc/rtc-pl031.c +++ b/drivers/rtc/rtc-pl031.c @@ -305,7 +305,6 @@ static int pl031_remove(struct amba_device *adev) { struct pl031_local *ldata = dev_get_drvdata(&adev->dev); - amba_set_drvdata(adev, NULL); free_irq(adev->irq[0], ldata); rtc_device_unregister(ldata->rtc); iounmap(ldata->base); @@ -392,7 +391,6 @@ out_no_irq: rtc_device_unregister(ldata->rtc); out_no_rtc: iounmap(ldata->base); - amba_set_drvdata(adev, NULL); out_no_remap: kfree(ldata); out: diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index 9c511a9..f661a7e 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -2288,7 +2288,6 @@ pl022_remove(struct amba_device *adev) amba_release_regions(adev); tasklet_disable(&pl022->pump_transfers); spi_unregister_master(pl022->master); - amba_set_drvdata(adev, NULL); return 0; } diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c index 8b90f0b..33bd860 100644 --- a/drivers/tty/serial/amba-pl010.c +++ b/drivers/tty/serial/amba-pl010.c @@ -728,7 +728,6 @@ static int pl010_probe(struct amba_device *dev, const struct amba_id *id) amba_set_drvdata(dev, uap); ret = uart_add_one_port(&amba_reg, &uap->port); if (ret) { - amba_set_drvdata(dev, NULL); amba_ports[i] = NULL; clk_put(uap->clk); unmap: @@ -745,8 +744,6 @@ static int pl010_remove(struct amba_device *dev) struct uart_amba_port *uap = amba_get_drvdata(dev); int i; - amba_set_drvdata(dev, NULL); - uart_remove_one_port(&amba_reg, &uap->port); for (i = 0; i < ARRAY_SIZE(amba_ports); i++) diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index aaa2286..7203864 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -2147,7 +2147,6 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id) amba_set_drvdata(dev, uap); ret = uart_add_one_port(&amba_reg, &uap->port); if (ret) { - amba_set_drvdata(dev, NULL); amba_ports[i] = NULL; pl011_dma_remove(uap); } @@ -2160,8 +2159,6 @@ static int pl011_remove(struct amba_device *dev) struct uart_amba_port *uap = amba_get_drvdata(dev); int i; - amba_set_drvdata(dev, NULL); - uart_remove_one_port(&amba_reg, &uap->port); for (i = 0; i < ARRAY_SIZE(amba_ports); i++) diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c index 0a2cce7..0bab6ab 100644 --- a/drivers/video/amba-clcd.c +++ b/drivers/video/amba-clcd.c @@ -594,8 +594,6 @@ static int clcdfb_remove(struct amba_device *dev) { struct clcd_fb *fb = amba_get_drvdata(dev); - amba_set_drvdata(dev, NULL); - clcdfb_disable(fb); unregister_framebuffer(&fb->fb); if (fb->fb.cmap.len) diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c index 58df98a..3f786ce 100644 --- a/drivers/watchdog/sp805_wdt.c +++ b/drivers/watchdog/sp805_wdt.c @@ -268,7 +268,6 @@ static int sp805_wdt_remove(struct amba_device *adev) struct sp805_wdt *wdt = amba_get_drvdata(adev); watchdog_unregister_device(&wdt->wdd); - amba_set_drvdata(adev, NULL); watchdog_set_drvdata(&wdt->wdd, NULL); return 0; -- 1.8.2.3
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