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| author | Raul E Rangel <rrangel@chromium.org> | 2021-07-14 13:51:27 -0600 |
|---|---|---|
| committer | Raul Rangel <rrangel@chromium.org> | 2021-07-18 15:15:27 +0000 |
| commit | 3af732ada0b4bcc2dce3a982f83dc4632f75f784 (patch) | |
| tree | dc23cec6cdfec98ea1aa126f8ae6e442a4081574 | |
| parent | 6f3c9018c6b830311db3a819706fc14954a5b0c2 (diff) | |
soc/amd/common/block/lpc/spi_dma: Yield after completing transaction
There is no telling when the next udelay will be, so explicitly call
`thread_yield()` after completing a transaction. This will allow any
pending transactions to immediately start.
BUG=b:179699789
TEST=Verify new transaction is enqueued right after another.
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I9c1272bde46c3e0c15305b76c2ea7a6dde5ed0b0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56321
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/soc/amd/common/block/lpc/spi_dma.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/lpc/spi_dma.c b/src/soc/amd/common/block/lpc/spi_dma.c index fdc4f32593..5c697790c8 100644 --- a/src/soc/amd/common/block/lpc/spi_dma.c +++ b/src/soc/amd/common/block/lpc/spi_dma.c @@ -193,6 +193,9 @@ static ssize_t spi_dma_readat_dma(const struct region_device *rd, void *destinat printk(BIOS_SPEW, "%s: end: dest: %p, source: %#zx, remaining: %zu\n", __func__, destination, source, transaction.remaining); + /* Allow queued up transaction to continue */ + thread_yield(); + if (transaction.remaining) return -1; |