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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-08-14 14:42:50 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-08-14 14:42:50 +0000 |
commit | d15145a14005d75622dd44be1be0821975293366 (patch) | |
tree | b7f43cc028560883de0ec4c9bf58b345dbadb02e /nuttx/lib | |
parent | 9613efa7df49054d033f769af97bbfa3ac82cc75 (diff) | |
download | px4-nuttx-d15145a14005d75622dd44be1be0821975293366.tar.gz px4-nuttx-d15145a14005d75622dd44be1be0821975293366.tar.bz2 px4-nuttx-d15145a14005d75622dd44be1be0821975293366.zip |
Revise recent changes to serial driver error handling: Errors other than EINTR may be returned when the driver is used very early in initialization. STM32 SPI driver will now survive repeated initializations
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5026 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/lib')
-rw-r--r-- | nuttx/lib/stdio/lib_rawinstream.c | 3 | ||||
-rw-r--r-- | nuttx/lib/stdio/lib_rawoutstream.c | 9 | ||||
-rw-r--r-- | nuttx/lib/stdio/lib_stdoutstream.c | 11 | ||||
-rw-r--r-- | nuttx/lib/stdio/lib_syslogstream.c | 5 |
4 files changed, 15 insertions, 13 deletions
diff --git a/nuttx/lib/stdio/lib_rawinstream.c b/nuttx/lib/stdio/lib_rawinstream.c index aacc8f867..9671a2716 100644 --- a/nuttx/lib/stdio/lib_rawinstream.c +++ b/nuttx/lib/stdio/lib_rawinstream.c @@ -69,12 +69,11 @@ static int rawinstream_getc(FAR struct lib_instream_s *this) } /* Return EOF on any failure to read from the incoming byte stream. The - * only expected error is EINTER meaning that the read was interrupted + * only expected error is EINTR meaning that the read was interrupted * by a signal. A Zero return value would indicated an end-of-file * confition. */ - DEBUGASSERT(nwritten == 0 || get_errno() == EINTR); return EOF; } diff --git a/nuttx/lib/stdio/lib_rawoutstream.c b/nuttx/lib/stdio/lib_rawoutstream.c index 6adf9b53d..ed813f87a 100644 --- a/nuttx/lib/stdio/lib_rawoutstream.c +++ b/nuttx/lib/stdio/lib_rawoutstream.c @@ -59,9 +59,11 @@ static void rawoutstream_putc(FAR struct lib_outstream_s *this, int ch) DEBUGASSERT(this && rthis->fd >= 0); - /* Loop until the character is successfully transferred */ + /* Loop until the character is successfully transferred or until an + * irrecoverable error occurs. + */ - for (;;) + do { nwritten = write(rthis->fd, &buffer, 1); if (nwritten == 1) @@ -75,8 +77,9 @@ static void rawoutstream_putc(FAR struct lib_outstream_s *this, int ch) * from write(). */ - DEBUGASSERT(nwritten < 0 && get_errno() == EINTR); + DEBUGASSERT(nwritten < 0); } + while (get_errno() == EINTR); } /**************************************************************************** diff --git a/nuttx/lib/stdio/lib_stdoutstream.c b/nuttx/lib/stdio/lib_stdoutstream.c index b8dd0bf63..20da5b702 100644 --- a/nuttx/lib/stdio/lib_stdoutstream.c +++ b/nuttx/lib/stdio/lib_stdoutstream.c @@ -58,9 +58,11 @@ static void stdoutstream_putc(FAR struct lib_outstream_s *this, int ch) DEBUGASSERT(this && sthis->stream); - /* Loop until the character is successfully transferred */ + /* Loop until the character is successfully transferred or an irrecoverable + * error occurs. + */ - for (;;) + do { result = fputc(ch, sthis->stream); if (result != EOF) @@ -70,11 +72,10 @@ static void stdoutstream_putc(FAR struct lib_outstream_s *this, int ch) } /* EINTR (meaning that fputc was interrupted by a signal) is the only - * expected error. + * recoverable error. */ - - DEBUGASSERT(get_errno() == EINTR); } + while (get_errno() == EINTR); } /**************************************************************************** diff --git a/nuttx/lib/stdio/lib_syslogstream.c b/nuttx/lib/stdio/lib_syslogstream.c index 1a47f6abb..7e47d794a 100644 --- a/nuttx/lib/stdio/lib_syslogstream.c +++ b/nuttx/lib/stdio/lib_syslogstream.c @@ -69,7 +69,7 @@ static void syslogstream_putc(FAR struct lib_outstream_s *this, int ch) * error occurs. */ - for (;;) + do { /* Write the character to the supported logging device */ @@ -85,9 +85,8 @@ static void syslogstream_putc(FAR struct lib_outstream_s *this, int ch) * syslog_putc() was awakened by a signal. This is not a real error and * must be ignored in this context. */ - - DEBUGASSERT(ret == -EINTR); } + while (ret == -EINTR); } /**************************************************************************** |