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util/spkmodem-recv: remove unnecessary error check

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the loop in main() already checks EOF, and errno is
properly handled at the end of main()

we only need to call ferror(), to check error state

this fixes a bogus error message when pressing ctrl+D
to terminate the program, *which is the intended way
to terminate this program* (that, or EOF is reached
in any other another way)

do not treat intended behaviour as an error condition!

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2023-06-13 22:50:27 +01:00
parent a1758a7ab0
commit 17cd0af9c1
1 changed files with 4 additions and 10 deletions
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util/spkmodem_recv/spkmodem-recv.c
+4 -10
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@@ -44,7 +44,6 @@ char ascii = 0;
void handle_audio(void);
void fetch_sample(void);
void read_frame(void);
int set_ascii_bit(void);
void print_char(void);
void print_stats(void);
@@ -94,7 +93,10 @@ fetch_sample(void)
freq_data += pulse[next_ringpos];
freq_separator -= pulse[next_ringpos];
read_frame();
fread(frame + ringpos, 1, sizeof(frame[0]), stdin);
if (ferror(stdin) != 0)
err(ERR(), "Could not read from frame.");
if ((pulse[ringpos] = (abs(frame[ringpos]) > THRESHOLD) ? 1 : 0))
++freq_separator;
++ringpos;
@@ -102,14 +104,6 @@ fetch_sample(void)
++sample_count;
}
void
read_frame(void)
{
if ((fread(frame + ringpos, 1, sizeof(frame[0]), stdin)
!= sizeof(frame[0])) || (ferror(stdin) != 0))
err(ERR(), "Could not read from frame.");
}
int
set_ascii_bit(void)
{