[PATCH 1/1] fs: fat: convert change month correctly

[Alexander Dahl]

Hello Heinrich,

Am Tue, Apr 09, 2024 at 08:04:56PM +0200 schrieb Heinrich Schuchardt:
> The month is stored in 5 - 8. We need to shift it by 5 bits.
> 
> Cf. Microsoft FAT Specification, 2005-08-30
> 
> Fixes: 13c11c665320 ("fs: fat: add file attributes to struct fs_dirent")
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
> ---
>  fs/fat/fat.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/fat/fat.c b/fs/fat/fat.c
> index 14e53cf2d5a..2dd9d4e72dc 100644
> --- a/fs/fat/fat.c
> +++ b/fs/fat/fat.c
> @@ -1254,7 +1254,7 @@ out:
>  static void __maybe_unused fat2rtc(u16 date, u16 time, struct rtc_time *tm)
>  {
>  	tm->tm_mday = date & 0x1f;
> -	tm->tm_mon = (date & 0x1e0) >> 4;
> +	tm->tm_mon = (date & 0x1e0) >> 5;
>  	tm->tm_year = (date >> 9) + 1980;
>  
>  	tm->tm_sec = (time & 0x1f) << 1;

Reviewed-by: Alexander Dahl <ada at thorsis.com>

Greets
Alex