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tools: usbip: detach: avoid calling strlen() at each iteration

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Instead of calling strlen on every iteration of the for loop, just call it
once and cache the result in a temporary local variable which will be used
in the for loop instead.

Signed-off-by: Eric Curtin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Eric Curtin 2015-09-15 21:27:20 +01:00 • committed by Greg Kroah-Hartman
commit 0c61814544
1 changed files with 3 additions and 1 deletions
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4
tools/usb/usbip/src/usbip_detach.c
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@ -47,7 +47,9 @@ static int detach_port(char *port)
uint8_t portnum;
char path[PATH_MAX+1];
for (unsigned int i = 0; i < strlen(port); i++)
unsigned int port_len = strlen(port);
for (unsigned int i = 0; i < port_len; i++)
if (!isdigit(port[i])) {
err("invalid port %s", port);
return -1;