[PATCH v1] PCI/AER: use match_string() helper to simplify the code

[Bjorn Helgaas]

On Mon, Jan 28, 2019 at 01:57:28PM +0200, Andy Shevchenko wrote:
> match_string() returns the index of an array for a matching string,
> which can be used intead of open coded implementation.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>

Applied to pci/aer for v5.1, thanks!

> ---
>  drivers/pci/pcie/aer.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
> index fed29de783e0..f8fc2114ad39 100644
> --- a/drivers/pci/pcie/aer.c
> +++ b/drivers/pci/pcie/aer.c
> @@ -117,7 +117,7 @@ bool pci_aer_available(void)
>  
>  static int ecrc_policy = ECRC_POLICY_DEFAULT;
>  
> -static const char *ecrc_policy_str[] = {
> +static const char * const ecrc_policy_str[] = {
>  	[ECRC_POLICY_DEFAULT] = "bios",
>  	[ECRC_POLICY_OFF] = "off",
>  	[ECRC_POLICY_ON] = "on"
> @@ -203,11 +203,8 @@ void pcie_ecrc_get_policy(char *str)
>  {
>  	int i;
>  
> -	for (i = 0; i < ARRAY_SIZE(ecrc_policy_str); i++)
> -		if (!strncmp(str, ecrc_policy_str[i],
> -			     strlen(ecrc_policy_str[i])))
> -			break;
> -	if (i >= ARRAY_SIZE(ecrc_policy_str))
> +	i = match_string(ecrc_policy_str, ARRAY_SIZE(ecrc_policy_str), str);
> +	if (i < 0)
>  		return;
>  
>  	ecrc_policy = i;
> -- 
> 2.20.1
>