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util/nvmutil: comment valid_read for clarity

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Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-03 22:59:38 +00:00
parent 7a62ad3f62
commit 75bcc46de4
1 changed files with 6 additions and 1 deletions
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util/nvmutil/nvmutil.c
+6 -1
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@@ -383,7 +383,8 @@ static int
valid_read(const char *rpath, ssize_t rval, size_t rsize, int retry) valid_read(const char *rpath, ssize_t rval, size_t rsize, int retry)
{ {
if (rval == (ssize_t) rsize) if (rval == (ssize_t) rsize)
return 1; return 1; /* Successful read */
if (rval != -1) if (rval != -1)
err(ECANCELED, "Short read, %zd: %s", rval, rpath); err(ECANCELED, "Short read, %zd: %s", rval, rpath);
if (errno != EINTR) if (errno != EINTR)
@@ -391,6 +392,10 @@ valid_read(const char *rpath, ssize_t rval, size_t rsize, int retry)
if (retry == MAX_RETRY_READ - 1) if (retry == MAX_RETRY_READ - 1)
err(EINTR, "read: max retries exceeded: %s", rpath); err(EINTR, "read: max retries exceeded: %s", rpath);
/*
* Bad read, with errno EINTR (syscall interrupted).
* Reset the error state and try again.
*/
errno = 0; errno = 0;
return 0; return 0;
} }