Re: [PATCH] [POWERPC] Xilinx: hwicap driver
From: Nathan Lynch <hidden>
Date: 2008-02-01 05:56:44
Possibly related (same subject, not in this thread)
- 2008-02-08 · Re: [PATCH] [POWERPC] Xilinx: hwicap driver · Randy Dunlap <hidden>
- 2008-02-08 · Re: [PATCH] [POWERPC] Xilinx: hwicap driver · Jiri Slaby <hidden>
- 2008-02-08 · [PATCH] [POWERPC] Xilinx: hwicap driver · Stephen Neuendorffer <hidden>
- 2008-02-05 · RE: [PATCH] [POWERPC] Xilinx: hwicap driver · Stephen Neuendorffer <hidden>
- 2008-02-01 · [PATCH] [POWERPC] Xilinx: hwicap driver · Stephen Neuendorffer <hidden>
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).