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Message-Id: <201402131945.s1DJj5WV022483@gelk.kernelslacker.org>
Date: Thu, 13 Feb 2014 14:45:05 -0500
From: Dave Jones <davej@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: gregkh@...uxfoundation.org
Subject: [PATCH 01/38] staging/bcm: move IOCTL_BCM_REGISTER_READ_PRIVATE case out to its own function.
bcm_char_ioctl is one of the longest non-generated functions in the kernel,
at 1906 lines. Splitting it up into multiple functions should simplify
this a lot.
Signed-off-by: Dave Jones <davej@...oraproject.org>
---
drivers/staging/bcm/Bcmchar.c | 96 +++++++++++++++++++++++--------------------
1 file changed, 52 insertions(+), 44 deletions(-)
diff --git a/drivers/staging/bcm/Bcmchar.c b/drivers/staging/bcm/Bcmchar.c
index f1b6de0293c8..0e63929b7b11 100644
--- a/drivers/staging/bcm/Bcmchar.c
+++ b/drivers/staging/bcm/Bcmchar.c
@@ -150,6 +150,55 @@ static ssize_t bcm_char_read(struct file *filp, char __user *buf, size_t size,
return PktLen;
}
+static int bcm_char_ioctl_reg_read_private(void __user *argp, struct bcm_mini_adapter *Adapter)
+{
+ struct bcm_rdm_buffer sRdmBuffer = {0};
+ struct bcm_ioctl_buffer IoBuffer;
+ PCHAR temp_buff;
+ INT Status = STATUS_FAILURE;
+ UINT Bufflen;
+ u16 temp_value;
+ int bytes;
+
+ /* Copy Ioctl Buffer structure */
+ if (copy_from_user(&IoBuffer, argp, sizeof(struct bcm_ioctl_buffer)))
+ return -EFAULT;
+
+ if (IoBuffer.InputLength > sizeof(sRdmBuffer))
+ return -EINVAL;
+
+ if (copy_from_user(&sRdmBuffer, IoBuffer.InputBuffer, IoBuffer.InputLength))
+ return -EFAULT;
+
+ if (IoBuffer.OutputLength > USHRT_MAX ||
+ IoBuffer.OutputLength == 0) {
+ return -EINVAL;
+ }
+
+ Bufflen = IoBuffer.OutputLength;
+ temp_value = 4 - (Bufflen % 4);
+ Bufflen += temp_value % 4;
+
+ temp_buff = kmalloc(Bufflen, GFP_KERNEL);
+ if (!temp_buff)
+ return -ENOMEM;
+
+ bytes = rdmalt(Adapter, (UINT)sRdmBuffer.Register,
+ (PUINT)temp_buff, Bufflen);
+ if (bytes > 0) {
+ Status = STATUS_SUCCESS;
+ if (copy_to_user(IoBuffer.OutputBuffer, temp_buff, bytes)) {
+ kfree(temp_buff);
+ return -EFAULT;
+ }
+ } else {
+ Status = bytes;
+ }
+
+ kfree(temp_buff);
+ return Status;
+}
+
static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
{
struct bcm_tarang_data *pTarang = filp->private_data;
@@ -201,50 +250,9 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
switch (cmd) {
/* Rdms for Swin Idle... */
- case IOCTL_BCM_REGISTER_READ_PRIVATE: {
- struct bcm_rdm_buffer sRdmBuffer = {0};
- PCHAR temp_buff;
- UINT Bufflen;
- u16 temp_value;
-
- /* Copy Ioctl Buffer structure */
- if (copy_from_user(&IoBuffer, argp, sizeof(struct bcm_ioctl_buffer)))
- return -EFAULT;
-
- if (IoBuffer.InputLength > sizeof(sRdmBuffer))
- return -EINVAL;
-
- if (copy_from_user(&sRdmBuffer, IoBuffer.InputBuffer, IoBuffer.InputLength))
- return -EFAULT;
-
- if (IoBuffer.OutputLength > USHRT_MAX ||
- IoBuffer.OutputLength == 0) {
- return -EINVAL;
- }
-
- Bufflen = IoBuffer.OutputLength;
- temp_value = 4 - (Bufflen % 4);
- Bufflen += temp_value % 4;
-
- temp_buff = kmalloc(Bufflen, GFP_KERNEL);
- if (!temp_buff)
- return -ENOMEM;
-
- bytes = rdmalt(Adapter, (UINT)sRdmBuffer.Register,
- (PUINT)temp_buff, Bufflen);
- if (bytes > 0) {
- Status = STATUS_SUCCESS;
- if (copy_to_user(IoBuffer.OutputBuffer, temp_buff, bytes)) {
- kfree(temp_buff);
- return -EFAULT;
- }
- } else {
- Status = bytes;
- }
-
- kfree(temp_buff);
- break;
- }
+ case IOCTL_BCM_REGISTER_READ_PRIVATE:
+ Status = bcm_char_ioctl_reg_read_private(argp, Adapter);
+ return Status;
case IOCTL_BCM_REGISTER_WRITE_PRIVATE: {
struct bcm_wrm_buffer sWrmBuffer = {0};
--
1.8.5.3
--
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