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| author | Mike Frysinger <vapier@gentoo.org> | 2011-05-09 18:14:01 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-05-09 18:14:01 +0000 |
| commit | b44f3f638ee28cb2e77d1768edbb7eeda01ffc61 (patch) | |
| tree | 5606c2b111d2b5ff841c7d523923ba8a00db84fe /sim | |
| parent | 91c1f14cb61e83f86b103d25a4104efc064d2b3b (diff) | |
| download | gdb-b44f3f638ee28cb2e77d1768edbb7eeda01ffc61.zip gdb-b44f3f638ee28cb2e77d1768edbb7eeda01ffc61.tar.gz gdb-b44f3f638ee28cb2e77d1768edbb7eeda01ffc61.tar.bz2 | |
sim: bfin: fix UART LSR read-only bit saturation
A few bits in the newer UART LSR register are not sticky, so make sure
we clear them when returning updated status rather than leaving them
always set.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'sim')
| -rw-r--r-- | sim/bfin/ChangeLog | 5 | ||||
| -rw-r--r-- | sim/bfin/dv-bfin_uart2.c | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/sim/bfin/ChangeLog b/sim/bfin/ChangeLog index 3470143..6785044 100644 --- a/sim/bfin/ChangeLog +++ b/sim/bfin/ChangeLog @@ -1,3 +1,8 @@ +2011-05-09 Mike Frysinger <vapier@gentoo.org> + + * dv-bfin_uart2.c (bfin_uart_io_read_buffer): Clear DR/THRE/TEMT bits + from uart->lsr before setting them. + 2011-04-27 Mike Frysinger <vapier@gentoo.org> * dv-bfin_dmac.c (bfin_dmac): Constify pmap array. diff --git a/sim/bfin/dv-bfin_uart2.c b/sim/bfin/dv-bfin_uart2.c index facde1c..179574d 100644 --- a/sim/bfin/dv-bfin_uart2.c +++ b/sim/bfin/dv-bfin_uart2.c @@ -151,6 +151,7 @@ bfin_uart_io_read_buffer (struct hw *me, void *dest, bfin_uart_reschedule (me); break; case mmr_offset(lsr): + uart->lsr &= ~(DR | THRE | TEMT); uart->lsr |= bfin_uart_get_status (me); case mmr_offset(thr): case mmr_offset(msr): |