[PATCH] [POWERPC] Xilinx: hwicap driver
Nathan Lynch
ntl at pobox.com
Fri Feb 1 16:56:14 EST 2008
Stephen Neuendorffer wrote:
>
> +static ssize_t
> +hwicap_read(struct file *file, char *buf, size_t count, loff_t *ppos)
> +{
> + struct hwicap_drvdata *drvdata = file->private_data;
> + ssize_t bytes_to_read = 0;
> + u32 *kbuf;
> + u32 words;
> + u32 bytes_remaining;
> + int status;
> +
> + spin_lock(&hwicap_spinlock);
> + if (drvdata->is_accessing)
> + return -EBUSY;
Need to unlock before returning (several places in this patch).
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