From: Greg Kroah-Hartman Date: Fri, 18 Feb 2022 09:41:05 +0000 (+0100) Subject: 5.4-stable patches X-Git-Tag: v4.9.303~64 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=51d53d29290805014549546ed30fada5b9346b96;p=thirdparty%2Fkernel%2Fstable-queue.git 5.4-stable patches added patches: dmaengine-at_xdmac-start-transfer-for-cyclic-channels-in-issue_pending.patch --- diff --git a/queue-5.4/dmaengine-at_xdmac-start-transfer-for-cyclic-channels-in-issue_pending.patch b/queue-5.4/dmaengine-at_xdmac-start-transfer-for-cyclic-channels-in-issue_pending.patch new file mode 100644 index 00000000000..9bf5be66689 --- /dev/null +++ b/queue-5.4/dmaengine-at_xdmac-start-transfer-for-cyclic-channels-in-issue_pending.patch @@ -0,0 +1,43 @@ +From foo@baz Fri Feb 18 10:40:40 AM CET 2022 +From: Tudor Ambarus +Date: Wed, 15 Dec 2021 13:01:05 +0200 +Subject: dmaengine: at_xdmac: Start transfer for cyclic channels in issue_pending + +From: Tudor Ambarus + +commit e6af9b05bec63cd4d1de2a33968cd0be2a91282a upstream. + +Cyclic channels must too call issue_pending in order to start a transfer. +Start the transfer in issue_pending regardless of the type of channel. +This wrongly worked before, because in the past the transfer was started +at tx_submit level when only a desc in the transfer list. + +Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") +Change-Id: If1bf3e13329cebb9904ae40620f6cf2b7f06fe9f +Signed-off-by: Tudor Ambarus +Link: https://lore.kernel.org/r/20211215110115.191749-3-tudor.ambarus@microchip.com +Signed-off-by: Vinod Koul +Signed-off-by: Mickael GARDET +Signed-off-by: Greg Kroah-Hartman +--- + drivers/dma/at_xdmac.c | 6 ++++-- + 1 file changed, 4 insertions(+), 2 deletions(-) + +--- a/drivers/dma/at_xdmac.c ++++ b/drivers/dma/at_xdmac.c +@@ -1726,11 +1726,13 @@ static irqreturn_t at_xdmac_interrupt(in + static void at_xdmac_issue_pending(struct dma_chan *chan) + { + struct at_xdmac_chan *atchan = to_at_xdmac_chan(chan); ++ unsigned long flags; + + dev_dbg(chan2dev(&atchan->chan), "%s\n", __func__); + +- if (!at_xdmac_chan_is_cyclic(atchan)) +- at_xdmac_advance_work(atchan); ++ spin_lock_irqsave(&atchan->lock, flags); ++ at_xdmac_advance_work(atchan); ++ spin_unlock_irqrestore(&atchan->lock, flags); + + return; + } diff --git a/queue-5.4/series b/queue-5.4/series index 5159f9a89f7..d46e3c2c9a5 100644 --- a/queue-5.4/series +++ b/queue-5.4/series @@ -30,3 +30,4 @@ ext4-check-for-out-of-order-index-extents-in-ext4_valid_extent_entries.patch ext4-check-for-inconsistent-extents-between-index-and-leaf-block.patch ext4-prevent-partial-update-of-the-extent-blocks.patch taskstats-cleanup-the-use-of-task-exit_code.patch +dmaengine-at_xdmac-start-transfer-for-cyclic-channels-in-issue_pending.patch