From: Sasha Levin <sashal@kernel.org> To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Marc Ferland <ferlandm@amotus.ca>, Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>, Vinod Koul <vkoul@kernel.org>, Sasha Levin <sashal@kernel.org>, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 5.9 09/33] dmaengine: xilinx_dma: use readl_poll_timeout_atomic variant Date: Wed, 25 Nov 2020 10:35:26 -0500 [thread overview] Message-ID: <20201125153550.810101-9-sashal@kernel.org> (raw) In-Reply-To: <20201125153550.810101-1-sashal@kernel.org> From: Marc Ferland <ferlandm@amotus.ca> [ Upstream commit 0ba2df09f1500d3f27398a3382b86d39c3e6abe2 ] The xilinx_dma_poll_timeout macro is sometimes called while holding a spinlock (see xilinx_dma_issue_pending() for an example) this means we shouldn't sleep when polling the dma channel registers. To address it in xilinx poll timeout macro use readl_poll_timeout_atomic instead of readl_poll_timeout variant. Signed-off-by: Marc Ferland <ferlandm@amotus.ca> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Link: https://lore.kernel.org/r/1604473206-32573-2-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/dma/xilinx/xilinx_dma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 0fc432567b857..993297d585c01 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -517,8 +517,8 @@ struct xilinx_dma_device { #define to_dma_tx_descriptor(tx) \ container_of(tx, struct xilinx_dma_tx_descriptor, async_tx) #define xilinx_dma_poll_timeout(chan, reg, val, cond, delay_us, timeout_us) \ - readl_poll_timeout(chan->xdev->regs + chan->ctrl_offset + reg, val, \ - cond, delay_us, timeout_us) + readl_poll_timeout_atomic(chan->xdev->regs + chan->ctrl_offset + reg, \ + val, cond, delay_us, timeout_us) /* IO accessors */ static inline u32 dma_read(struct xilinx_dma_chan *chan, u32 reg) -- 2.27.0
WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <sashal@kernel.org> To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Marc Ferland <ferlandm@amotus.ca>, Sasha Levin <sashal@kernel.org>, Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>, Vinod Koul <vkoul@kernel.org>, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 5.9 09/33] dmaengine: xilinx_dma: use readl_poll_timeout_atomic variant Date: Wed, 25 Nov 2020 10:35:26 -0500 [thread overview] Message-ID: <20201125153550.810101-9-sashal@kernel.org> (raw) In-Reply-To: <20201125153550.810101-1-sashal@kernel.org> From: Marc Ferland <ferlandm@amotus.ca> [ Upstream commit 0ba2df09f1500d3f27398a3382b86d39c3e6abe2 ] The xilinx_dma_poll_timeout macro is sometimes called while holding a spinlock (see xilinx_dma_issue_pending() for an example) this means we shouldn't sleep when polling the dma channel registers. To address it in xilinx poll timeout macro use readl_poll_timeout_atomic instead of readl_poll_timeout variant. Signed-off-by: Marc Ferland <ferlandm@amotus.ca> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Link: https://lore.kernel.org/r/1604473206-32573-2-git-send-email-radhey.shyam.pandey@xilinx.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/dma/xilinx/xilinx_dma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index 0fc432567b857..993297d585c01 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -517,8 +517,8 @@ struct xilinx_dma_device { #define to_dma_tx_descriptor(tx) \ container_of(tx, struct xilinx_dma_tx_descriptor, async_tx) #define xilinx_dma_poll_timeout(chan, reg, val, cond, delay_us, timeout_us) \ - readl_poll_timeout(chan->xdev->regs + chan->ctrl_offset + reg, val, \ - cond, delay_us, timeout_us) + readl_poll_timeout_atomic(chan->xdev->regs + chan->ctrl_offset + reg, \ + val, cond, delay_us, timeout_us) /* IO accessors */ static inline u32 dma_read(struct xilinx_dma_chan *chan, u32 reg) -- 2.27.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-11-25 15:44 UTC|newest] Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-25 15:35 [PATCH AUTOSEL 5.9 01/33] HID: uclogic: Add ID for Trust Flex Design Tablet Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 02/33] HID: ite: Replace ABS_MISC 120/121 events with touchpad on/off keypresses Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 03/33] HID: cypress: Support Varmilo Keyboards' media hotkeys Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 04/33] HID: add support for Sega Saturn Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 05/33] Input: i8042 - allow insmod to succeed on devices without an i8042 controller Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 06/33] HID: hid-sensor-hub: Fix issue with devices with no report ID Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 07/33] staging: ralink-gdma: fix kconfig dependency bug for DMA_RALINK Sasha Levin 2020-11-25 15:35 ` Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 08/33] HID: add HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE for Gamevice devices Sasha Levin 2020-11-25 15:35 ` Sasha Levin [this message] 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 09/33] dmaengine: xilinx_dma: use readl_poll_timeout_atomic variant Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 10/33] x86/xen: don't unbind uninitialized lock_kicker_irq Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 11/33] kunit: fix display of failed expectations for strings Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 12/33] HID: logitech-hidpp: Add HIDPP_CONSUMER_VENDOR_KEYS quirk for the Dinovo Edge Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 13/33] HID: Add Logitech Dinovo Edge battery quirk Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 14/33] proc: don't allow async path resolution of /proc/self components Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 15/33] nvme: free sq/cq dbbuf pointers when dbbuf set fails Sasha Levin 2020-11-25 15:35 ` Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 16/33] io_uring: handle -EOPNOTSUPP on path resolution Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 17/33] net: stmmac: dwmac_lib: enlarge dma reset timeout Sasha Levin 2020-11-25 15:35 ` Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 18/33] vdpasim: fix "mac_pton" undefined error Sasha Levin 2020-11-25 15:35 ` Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 19/33] vhost: add helper to check if a vq has been setup Sasha Levin 2020-11-25 15:35 ` Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 20/33] vhost scsi: alloc cmds per vq instead of session Sasha Levin 2020-11-25 15:35 ` Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 21/33] vhost scsi: fix cmd completion race Sasha Levin 2020-11-25 15:35 ` Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 22/33] vhost scsi: add lun parser helper Sasha Levin 2020-11-25 15:35 ` Sasha Levin 2020-11-25 17:48 ` Paolo Bonzini 2020-11-25 17:48 ` Paolo Bonzini 2020-11-25 18:01 ` Sasha Levin 2020-11-25 18:01 ` Sasha Levin 2020-11-25 18:08 ` Paolo Bonzini 2020-11-25 18:08 ` Paolo Bonzini 2020-11-29 4:13 ` Sasha Levin 2020-11-29 4:13 ` Sasha Levin 2020-11-29 17:34 ` Paolo Bonzini 2020-11-29 17:34 ` Paolo Bonzini 2020-11-29 21:06 ` Sasha Levin 2020-11-29 21:06 ` Sasha Levin 2020-11-30 8:33 ` Paolo Bonzini 2020-11-30 8:33 ` Paolo Bonzini 2020-11-30 13:28 ` Greg KH 2020-11-30 13:28 ` Greg KH 2020-11-30 13:52 ` Paolo Bonzini 2020-11-30 13:52 ` Paolo Bonzini 2020-11-30 13:57 ` Greg KH 2020-11-30 13:57 ` Greg KH 2020-11-30 14:00 ` Paolo Bonzini 2020-11-30 14:00 ` Paolo Bonzini 2020-11-30 17:34 ` Sasha Levin 2020-11-30 17:34 ` Sasha Levin 2020-11-30 17:38 ` Sasha Levin 2020-11-30 17:38 ` Sasha Levin 2020-11-30 17:52 ` Paolo Bonzini 2020-11-30 17:52 ` Paolo Bonzini 2020-11-30 19:44 ` Mike Christie 2020-11-30 20:29 ` Paolo Bonzini 2020-11-30 20:29 ` Paolo Bonzini 2020-11-30 23:59 ` Sasha Levin 2020-11-30 23:59 ` Sasha Levin 2020-12-04 8:27 ` Paolo Bonzini 2020-12-04 8:27 ` Paolo Bonzini 2020-12-04 15:49 ` Sasha Levin 2020-12-04 15:49 ` Sasha Levin 2020-12-04 16:12 ` Joe Perches 2020-12-04 16:12 ` Joe Perches 2020-12-04 17:08 ` Paolo Bonzini 2020-12-04 17:08 ` Paolo Bonzini 2020-12-05 20:59 ` Sasha Levin 2020-12-05 20:59 ` Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 23/33] vhost scsi: Add support for LUN resets Sasha Levin 2020-11-25 15:35 ` Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 24/33] cpuidle: tegra: Annotate tegra_pm_set_cpu_in_lp2() with RCU_NONIDLE Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 25/33] dmaengine: pl330: _prep_dma_memcpy: Fix wrong burst size Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 26/33] scsi: libiscsi: Fix NOP race condition Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 27/33] scsi: target: iscsi: Fix cmd abort fabric stop race Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 28/33] lockdep: Put graph lock/unlock under lock_recursion protection Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 29/33] perf/x86: fix sysfs type mismatches Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 30/33] xtensa: uaccess: Add missing __user to strncpy_from_user() prototype Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 31/33] x86/dumpstack: Do not try to access user space code of other tasks Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 32/33] net: dsa: mv88e6xxx: Wait for EEPROM done after HW reset Sasha Levin 2020-11-25 15:35 ` [PATCH AUTOSEL 5.9 33/33] xfs: don't allow NOWAIT DIO across extent boundaries Sasha Levin 2020-11-25 21:52 ` Dave Chinner 2020-11-25 23:46 ` Sasha Levin 2020-11-26 7:13 ` Dave Chinner
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