From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 31 Mar 2013 19:41:41 +0000 (-0400)
Subject: last_radio_log: switch to proc_create()
X-Git-Tag: firefly_0821_release~3680^2~611^2~106
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8510e30b46cd5467b2f930bef68a276dbc2c7d7c;p=firefly-linux-kernel-4.4.55.git

last_radio_log: switch to proc_create()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/arch/arm/mach-msm/last_radio_log.c b/arch/arm/mach-msm/last_radio_log.c
index 1e243f46a969..7777767ee89a 100644
--- a/arch/arm/mach-msm/last_radio_log.c
+++ b/arch/arm/mach-msm/last_radio_log.c
@@ -31,20 +31,8 @@ extern void *smem_item(unsigned id, unsigned *size);
 static ssize_t last_radio_log_read(struct file *file, char __user *buf,
 			size_t len, loff_t *offset)
 {
-	loff_t pos = *offset;
-	ssize_t count;
-
-	if (pos >= radio_log_size)
-		return 0;
-
-	count = min(len, (size_t)(radio_log_size - pos));
-	if (copy_to_user(buf, radio_log_base + pos, count)) {
-		pr_err("%s: copy to user failed\n", __func__);
-		return -EFAULT;
-	}
-
-	*offset += count;
-	return count;
+	return simple_read_from_buffer(buf, len, offset,
+				radio_log_base, radio_log_size);
 }
 
 static struct file_operations last_radio_log_fops = {
@@ -67,7 +55,8 @@ void msm_init_last_radio_log(struct module *owner)
 		return;
 	}
 
-	entry = create_proc_entry("last_radio_log", S_IFREG | S_IRUGO, NULL);
+	entry = proc_create("last_radio_log", S_IRUGO, NULL,
+				&last_radio_log_fops);
 	if (!entry) {
 		pr_err("%s: could not create proc entry for radio log\n",
 				__func__);
@@ -77,7 +66,6 @@ void msm_init_last_radio_log(struct module *owner)
 	pr_err("%s: last radio log is %d bytes long\n", __func__,
 		radio_log_size);
 	last_radio_log_fops.owner = owner;
-	entry->proc_fops = &last_radio_log_fops;
 	entry->size = radio_log_size;
 }
 EXPORT_SYMBOL(msm_init_last_radio_log);