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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-06-12 12:56:22 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-06-12 12:56:22 +1000 |
| commit | 0ef53cddd198853808bc2fe1ee2fe90142b2881d (patch) | |
| tree | eef999c10d591bad562afbfb6b2b45d79f02be77 /cf-code | |
| parent | e3c381828c86d0a11ca3315186fc5ad34e906553 (diff) | |
| download | cf-fsi-0ef53cddd198853808bc2fe1ee2fe90142b2881d.tar.gz cf-fsi-0ef53cddd198853808bc2fe1ee2fe90142b2881d.zip | |
Read back irq ack register before returning
Stores may be asynchronous, I'm not entirely certain
what ordering the CF provides with the subsequent
read of the command in SRAM, so ensure the store did
make it by reading back first.
Diffstat (limited to 'cf-code')
| -rw-r--r-- | cf-code/cf-fsi-fw.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/cf-code/cf-fsi-fw.S b/cf-code/cf-fsi-fw.S index 14b80d2..7bcc8c8 100644 --- a/cf-code/cf-fsi-fw.S +++ b/cf-code/cf-fsi-fw.S @@ -568,6 +568,7 @@ _int: addq.l #1,%a1@(INT_CNT) moveq.l #CVIC_SW_IRQ,%d0 move.l %d0,%a2@(CVIC_SW_IRQ_CLR) + move.l %a2@(CVIC_SW_IRQ_CLR),%d0 move.l %a7@+,%d0 rte |
