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| author | Ian Lepore <ian@FreeBSD.org> | 2017-12-18 02:34:37 +0000 |
|---|---|---|
| committer | Ian Lepore <ian@FreeBSD.org> | 2017-12-18 02:34:37 +0000 |
| commit | b5496277c7a5786f92f869b3ff4a201559ba53f0 (patch) | |
| tree | 4a48c0b86e4cb966b8af89a0271f2eefe3dda7eb | |
| parent | ae99239461decc6806c9ed3c8598afdef1c69e08 (diff) | |
| download | src-b5496277c7a5786f92f869b3ff4a201559ba53f0.tar.gz src-b5496277c7a5786f92f869b3ff4a201559ba53f0.zip | |
Do not attempt to refill the TX fifo if there is no data left to transfer.
A comment in bcm_bsc_fill_tx_fifo() even lists sc_totlen > 0 as a
precondition for calling the routine. I apparently forgot to make the
code do what my comment said.
Notes
Notes:
svn path=/head/; revision=326925
| -rw-r--r-- | sys/arm/broadcom/bcm2835/bcm2835_bsc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/arm/broadcom/bcm2835/bcm2835_bsc.c b/sys/arm/broadcom/bcm2835/bcm2835_bsc.c index e6fee99256d7..1fff97cdd034 100644 --- a/sys/arm/broadcom/bcm2835/bcm2835_bsc.c +++ b/sys/arm/broadcom/bcm2835/bcm2835_bsc.c @@ -508,7 +508,7 @@ bcm_bsc_intr(void *arg) * transfer is complete; TXD will be asserted along with ERR or * DONE if there is room in the fifo. */ - if (status & BCM_BSC_STATUS_TXD) + if ((status & BCM_BSC_STATUS_TXD) && sc->sc_totlen > 0) bcm_bsc_fill_tx_fifo(sc); } |