summaryrefslogtreecommitdiffstats
path: root/target/linux/pistachio/patches-5.15/101-dmaengine-img-mdc-Handle-early-status-read.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/pistachio/patches-5.15/101-dmaengine-img-mdc-Handle-early-status-read.patch')
-rw-r--r--target/linux/pistachio/patches-5.15/101-dmaengine-img-mdc-Handle-early-status-read.patch68
1 files changed, 0 insertions, 68 deletions
diff --git a/target/linux/pistachio/patches-5.15/101-dmaengine-img-mdc-Handle-early-status-read.patch b/target/linux/pistachio/patches-5.15/101-dmaengine-img-mdc-Handle-early-status-read.patch
deleted file mode 100644
index 031a4e3e5e..0000000000
--- a/target/linux/pistachio/patches-5.15/101-dmaengine-img-mdc-Handle-early-status-read.patch
+++ /dev/null
@@ -1,68 +0,0 @@
-From a2dd154377c9aa6ddda00d39b8c7c334e4fa16ff Mon Sep 17 00:00:00 2001
-From: Damien Horsley <damien.horsley@imgtec.com>
-Date: Tue, 22 Mar 2016 12:46:09 +0000
-Subject: dmaengine: img-mdc: Handle early status read
-
-It is possible that mdc_tx_status may be called before the first
-node has been read from memory.
-
-In this case, the residue value stored in the register is undefined.
-Return the transfer size instead.
-
-Signed-off-by: Damien Horsley <damien.horsley@imgtec.com>
----
- drivers/dma/img-mdc-dma.c | 40 ++++++++++++++++++++++++----------------
- 1 file changed, 24 insertions(+), 16 deletions(-)
-
---- a/drivers/dma/img-mdc-dma.c
-+++ b/drivers/dma/img-mdc-dma.c
-@@ -618,25 +618,33 @@ static enum dma_status mdc_tx_status(str
- (MDC_CMDS_PROCESSED_CMDS_DONE_MASK + 1);
-
- /*
-- * If the command loaded event hasn't been processed yet, then
-- * the difference above includes an extra command.
-+ * If the first node has not yet been read from memory,
-+ * the residue register value is undefined
- */
-- if (!mdesc->cmd_loaded)
-- cmds--;
-- else
-- cmds += mdesc->list_cmds_done;
--
-- bytes = mdesc->list_xfer_size;
-- ldesc = mdesc->list;
-- for (i = 0; i < cmds; i++) {
-- bytes -= ldesc->xfer_size + 1;
-- ldesc = ldesc->next_desc;
-- }
-- if (ldesc) {
-- if (residue != MDC_TRANSFER_SIZE_MASK)
-- bytes -= ldesc->xfer_size - residue;
-+ if (!mdesc->cmd_loaded && !cmds) {
-+ bytes = mdesc->list_xfer_size;
-+ } else {
-+ /*
-+ * If the command loaded event hasn't been processed yet, then
-+ * the difference above includes an extra command.
-+ */
-+ if (!mdesc->cmd_loaded)
-+ cmds--;
- else
-+ cmds += mdesc->list_cmds_done;
-+
-+ bytes = mdesc->list_xfer_size;
-+ ldesc = mdesc->list;
-+ for (i = 0; i < cmds; i++) {
- bytes -= ldesc->xfer_size + 1;
-+ ldesc = ldesc->next_desc;
-+ }
-+ if (ldesc) {
-+ if (residue != MDC_TRANSFER_SIZE_MASK)
-+ bytes -= ldesc->xfer_size - residue;
-+ else
-+ bytes -= ldesc->xfer_size + 1;
-+ }
- }
- }
- spin_unlock_irqrestore(&mchan->vc.lock, flags);