| commit | 1d6b698764084510fe6168bb5b650165dced03ae | |
| author | Grant Likely <grant.likely@secretlab.ca> | |
| Tue, 23 Oct 2007 04:27:46 +0000 (23 14:27 +1000) | ||
| committer | Josh Boyer <jwboyer@linux.vnet.ibm.com> | |
| Thu, 1 Nov 2007 12:12:19 +0000 (1 07:12 -0500) | ||
| tree | 3fce7676f8086b0b49d676dcaf99f04a253be989 | treesnapshot (tar.gz zip) |
| parent | 7ae0fa49c6502ca1ada0e043c5d25ee73c0a28c6 | commitdiff |
[POWERPC] Uartlite: speed up console output
Change the wait_tx routine to call cpu_relax() instead of udelay() to
reduce console output latency and test for the TXFULL bit instead of
TXEMPTY. That way the FIFO doesn't need to by 100% flushed before
writing the next character.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Change the wait_tx routine to call cpu_relax() instead of udelay() to
reduce console output latency and test for the TXFULL bit instead of
TXEMPTY. That way the FIFO doesn't need to by 100% flushed before
writing the next character.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| drivers/serial/uartlite.c | diffblobblamehistory |