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libubb/swuart.c: only return error codes or fail silently; don't print messages

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This commit is contained in:
Werner Almesberger 2012-12-31 19:27:16 -03:00
parent 506db2d69e
commit 5f3828f710
1 changed files with 2 additions and 6 deletions
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8
libubb/swuart.c
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@ -12,7 +12,6 @@
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <sys/mman.h>
@ -238,10 +237,8 @@ int swuart_open(uint32_t tx, uint32_t rx, int bps)
* Make sure code and rx/tx buffers are locked into memory before we
* disable interrupts in swuart_trx.
*/
if (mlockall(MCL_CURRENT | MCL_FUTURE)) {
perror("mlockall");
if (mlockall(MCL_CURRENT | MCL_FUTURE))
return -1;
}
ticks = TCLK/bps-1;
tx_mask = tx;
@ -257,6 +254,5 @@ int swuart_open(uint32_t tx, uint32_t rx, int bps)
void swuart_close(void)
{
if (munlockall())
perror("munlockall");
munlockall();
}