On Tue, 2015-03-03 at 05:23 -0500, Nicholas Mc Guire wrote:
> Use jiffies_to_msecs for converting jiffies as it handles all of the corner
> cases reliably and also helps readability. The printk format is fixed up 
> as jiffies_to_msecs returns unsigned int not unsigned long.

Then ideally you'd use %u not %d.

> Note that this patch will give a checkpatch warning due to "quoted string 
> split across lines" but thats not related to this change - not sure if this
> should be fixed - looks intentional to me.

It's not.  It'd be better coalesced.

> diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
[]
> @@ -1793,11 +1793,11 @@ static void idetape_setup(ide_drive_t *drive, 
> idetape_tape_t *tape, int minor)
>       tape->best_dsc_rw_freq = clamp_t(unsigned long, t, IDETAPE_DSC_RW_MIN,
>                                        IDETAPE_DSC_RW_MAX);
>       printk(KERN_INFO "ide-tape: %s <-> %s: %dKBps, %d*%dkB buffer, "
> -             "%lums tDSC%s\n",
> +             "%dms tDSC%s\n",
>               drive->name, tape->name, *(u16 *)&tape->caps[14],
>               (*(u16 *)&tape->caps[16] * 512) / tape->buffer_size,
>               tape->buffer_size / 1024,
> -             tape->best_dsc_rw_freq * 1000 / HZ,
> +             jiffies_to_msecs(tape->best_dsc_rw_freq),
>               (drive->dev_flags & IDE_DFLAG_USING_DMA) ? ", DMA" : "");


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