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Message-ID: <1271872771.1730.370.camel@Joe-Laptop.home>
Date: Wed, 21 Apr 2010 10:59:31 -0700
From: Joe Perches <joe@...ches.com>
To: Alessandro Ghedini <al3xbio@...il.com>
Cc: gregkh@...e.de, Andrew.Elwell@...il.com, mithlesh@...syssoft.com,
svenne@...p.dk, jkosina@...e.cz, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Staging: wlan-ng: fix many style warnings in
hfa384x_usb.c
On Wed, 2010-04-21 at 19:29 +0200, Alessandro Ghedini wrote:
> This patch fixes most of the style warnings found with checkpatch.pl in the
> hfa384x_usb.c file.
> diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c
> index 5df56f0..db819be 100644
> --- a/drivers/staging/wlan-ng/hfa384x_usb.c
> +++ b/drivers/staging/wlan-ng/hfa384x_usb.c
[]
> @@ -351,7 +351,9 @@ static int submit_rx_urb(hfa384x_t *hw, gfp_t memflags)
> hw->rx_urb_skb = skb;
>
> result = -ENOLINK;
> - if (!hw->wlandev->hwremoved && !test_bit(WORK_RX_HALT, &hw->usb_flags)) {
> + if (!hw->wlandev->hwremoved && \
> + !test_bit(WORK_RX_HALT, &hw->usb_flags)) {
> +
Using line continuations like this is unnecessary and undesirable.
Most kernel code uses a form like:
if (!thw->wlandev->hwremoved &&
!test_bit(WORK_RX_HALT, &hw->usb_flags))
(tabs to indent as much as possible, spaces to align where necessary)
> @@ -3845,8 +3852,8 @@ retry:
>
> default:
> /* This is NOT a valid CTLX "success" state! */
> - printk(KERN_ERR
> - "Illegal CTLX[%d] success state(%s, %d) in OUT URB\n",
> + printk(KERN_ERR "Illegal CTLX[%d] success " \
> + "state(%s, %d) in OUT URB\n",
>
Checkpatch isn't correct here.
Another option is to use pr_<level> with
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
so logging messages identify the unit/module
like shown below. A secondary benefit is the
code becomes slightly shorter.
A possible enhancement might be to use netdev_<level>
instead of pr_<level> where appropriate.
drivers/staging/wlan-ng/hfa384x_usb.c | 169 ++++++++++++++-------------------
1 files changed, 73 insertions(+), 96 deletions(-)
diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c
index 5df56f0..0995f85 100644
--- a/drivers/staging/wlan-ng/hfa384x_usb.c
+++ b/drivers/staging/wlan-ng/hfa384x_usb.c
@@ -110,6 +110,8 @@
* --------------------------------------------------------------------
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
@@ -356,9 +358,8 @@ static int submit_rx_urb(hfa384x_t *hw, gfp_t memflags)
/* Check whether we need to reset the RX pipe */
if (result == -EPIPE) {
- printk(KERN_WARNING
- "%s rx pipe stalled: requesting reset\n",
- hw->wlandev->netdev->name);
+ pr_warning("%s rx pipe stalled: requesting reset\n",
+ hw->wlandev->netdev->name);
if (!test_and_set_bit(WORK_RX_HALT, &hw->usb_flags))
schedule_work(&hw->usb_work);
}
@@ -406,9 +407,8 @@ static int submit_tx_urb(hfa384x_t *hw, struct urb *tx_urb, gfp_t memflags)
/* Test whether we need to reset the TX pipe */
if (result == -EPIPE) {
- printk(KERN_WARNING
- "%s tx pipe stalled: requesting reset\n",
- netdev->name);
+ pr_warning("%s tx pipe stalled: requesting reset\n",
+ netdev->name);
set_bit(WORK_TX_HALT, &hw->usb_flags);
schedule_work(&hw->usb_work);
} else if (result == 0) {
@@ -455,11 +455,10 @@ static void hfa384x_usb_defer(struct work_struct *data)
ret = usb_clear_halt(hw->usb, hw->endp_in);
if (ret != 0) {
- printk(KERN_ERR
- "Failed to clear rx pipe for %s: err=%d\n",
+ pr_err("Failed to clear rx pipe for %s: err=%d\n",
netdev->name, ret);
} else {
- printk(KERN_INFO "%s rx pipe reset complete.\n",
+ pr_info("%s rx pipe reset complete\n",
netdev->name);
clear_bit(WORK_RX_HALT, &hw->usb_flags);
set_bit(WORK_RX_RESUME, &hw->usb_flags);
@@ -472,8 +471,7 @@ static void hfa384x_usb_defer(struct work_struct *data)
ret = submit_rx_urb(hw, GFP_KERNEL);
if (ret != 0) {
- printk(KERN_ERR
- "Failed to resume %s rx pipe.\n", netdev->name);
+ pr_err("Failed to resume %s rx pipe\n", netdev->name);
} else {
clear_bit(WORK_RX_RESUME, &hw->usb_flags);
}
@@ -486,12 +484,10 @@ static void hfa384x_usb_defer(struct work_struct *data)
usb_kill_urb(&hw->tx_urb);
ret = usb_clear_halt(hw->usb, hw->endp_out);
if (ret != 0) {
- printk(KERN_ERR
- "Failed to clear tx pipe for %s: err=%d\n",
+ pr_err("Failed to clear tx pipe for %s: err=%d\n",
netdev->name, ret);
} else {
- printk(KERN_INFO "%s tx pipe reset complete.\n",
- netdev->name);
+ pr_info("%s tx pipe reset complete\n", netdev->name);
clear_bit(WORK_TX_HALT, &hw->usb_flags);
set_bit(WORK_TX_RESUME, &hw->usb_flags);
@@ -718,10 +714,9 @@ static int usbctlx_rrid_completor_fn(usbctlx_completor_t *head)
/* Validate the length, note body len calculation in bytes */
if (rridresult.riddata_len != complete->riddatalen) {
- printk(KERN_WARNING
- "RID len mismatch, rid=0x%04x hlen=%d fwlen=%d\n",
- rridresult.rid,
- complete->riddatalen, rridresult.riddata_len);
+ pr_warning("RID len mismatch, rid=0x%04x hlen=%d fwlen=%d\n",
+ rridresult.rid,
+ complete->riddatalen, rridresult.riddata_len);
return -ENODATA;
}
@@ -1211,8 +1206,7 @@ int hfa384x_corereset(hfa384x_t *hw, int holdtime, int settletime, int genesis)
result = usb_reset_device(hw->usb);
if (result < 0) {
- printk(KERN_ERR "usb_reset_device() failed, result=%d.\n",
- result);
+ pr_err("usb_reset_device() failed, result=%d.\n", result);
}
return result;
@@ -1311,9 +1305,9 @@ cleanup:
if (ctlx->state == CTLX_COMPLETE) {
result = completor->complete(completor);
} else {
- printk(KERN_WARNING "CTLX[%d] error: state(%s)\n",
- le16_to_cpu(ctlx->outbuf.type),
- ctlxstr(ctlx->state));
+ pr_warning("CTLX[%d] error: state(%s)\n",
+ le16_to_cpu(ctlx->outbuf.type),
+ ctlxstr(ctlx->state));
result = -EIO;
}
@@ -2018,7 +2012,7 @@ int hfa384x_drvr_flashdl_write(hfa384x_t *hw, u32 daddr, void *buf, u32 len)
if (hw->dlstate != HFA384x_DLSTATE_FLASHENABLED)
return -EINVAL;
- printk(KERN_INFO "Download %d bytes to flash @0x%06x\n", len, daddr);
+ pr_info("Download %d bytes to flash @0x%06x\n", len, daddr);
/* Convert to flat address for arithmetic */
/* NOTE: dlbuffer RID stores the address in AUX format */
@@ -2028,8 +2022,8 @@ int hfa384x_drvr_flashdl_write(hfa384x_t *hw, u32 daddr, void *buf, u32 len)
hw->bufinfo.page, hw->bufinfo.offset, dlbufaddr);
#if 0
- printk(KERN_WARNING "dlbuf@...06lx len=%d to=%d\n", dlbufaddr,
- hw->bufinfo.len, hw->dltimeout);
+ pr_warning("dlbuf@...06lx len=%d to=%d\n",
+ dlbufaddr, hw->bufinfo.len, hw->dltimeout);
#endif
/* Calculations to determine how many fills of the dlbuffer to do
* and how many USB wmemreq's to do for each fill. At this point
@@ -2055,14 +2049,14 @@ int hfa384x_drvr_flashdl_write(hfa384x_t *hw, u32 daddr, void *buf, u32 len)
burnlo = HFA384x_ADDR_CMD_MKOFF(burndaddr);
burnhi = HFA384x_ADDR_CMD_MKPAGE(burndaddr);
- printk(KERN_INFO "Writing %d bytes to flash @0x%06x\n",
- burnlen, burndaddr);
+ pr_info("Writing %d bytes to flash @0x%06x\n",
+ burnlen, burndaddr);
/* Set the download mode */
result = hfa384x_cmd_download(hw, HFA384x_PROGMODE_NV,
burnlo, burnhi, burnlen);
if (result) {
- printk(KERN_ERR "download(NV,lo=%x,hi=%x,len=%x) "
+ pr_err("download(NV,lo=%x,hi=%x,len=%x) "
"cmd failed, result=%d. Aborting d/l\n",
burnlo, burnhi, burnlen, result);
goto exit_proc;
@@ -2097,8 +2091,7 @@ int hfa384x_drvr_flashdl_write(hfa384x_t *hw, u32 daddr, void *buf, u32 len)
HFA384x_PROGMODE_NVWRITE,
0, 0, 0);
if (result) {
- printk(KERN_ERR
- "download(NVWRITE,lo=%x,hi=%x,len=%x) "
+ pr_err("download(NVWRITE,lo=%x,hi=%x,len=%x) "
"cmd failed, result=%d. Aborting d/l\n",
burnlo, burnhi, burnlen, result);
goto exit_proc;
@@ -2286,15 +2279,14 @@ int hfa384x_drvr_ramdl_enable(hfa384x_t *hw, u32 exeaddr)
/* Check that a port isn't active */
for (i = 0; i < HFA384x_PORTID_MAX; i++) {
if (hw->port_enabled[i]) {
- printk(KERN_ERR
- "Can't download with a macport enabled.\n");
+ pr_err("Can't download with a macport enabled\n");
return -EINVAL;
}
}
/* Check that we're not already in a download state */
if (hw->dlstate != HFA384x_DLSTATE_DISABLED) {
- printk(KERN_ERR "Download state not disabled.\n");
+ pr_err("Download state not disabled.\n");
return -EINVAL;
}
@@ -2359,7 +2351,7 @@ int hfa384x_drvr_ramdl_write(hfa384x_t *hw, u32 daddr, void *buf, u32 len)
if (hw->dlstate != HFA384x_DLSTATE_RAMENABLED)
return -EINVAL;
- printk(KERN_INFO "Writing %d bytes to ram @0x%06x\n", len, daddr);
+ pr_info("Writing %d bytes to ram @0x%06x\n", len, daddr);
/* How many dowmem calls? */
nwrites = len / HFA384x_USB_RWMEM_MAXLEN;
@@ -2454,8 +2446,8 @@ int hfa384x_drvr_readpda(hfa384x_t *hw, void *buf, unsigned int len)
result = hfa384x_dormem_wait(hw, currpage, curroffset, buf, len); /* units of bytes */
if (result) {
- printk(KERN_WARNING
- "Read from index %zd failed, continuing\n", i);
+ pr_warning("Read from index %zd failed, continuing\n",
+ i);
continue;
}
@@ -2467,14 +2459,13 @@ int hfa384x_drvr_readpda(hfa384x_t *hw, void *buf, unsigned int len)
pdrcode = le16_to_cpu(pda[currpdr + 1]);
/* Test the record length */
if (pdrlen > HFA384x_PDR_LEN_MAX || pdrlen == 0) {
- printk(KERN_ERR "pdrlen invalid=%d\n", pdrlen);
+ pr_err("pdrlen invalid=%d\n", pdrlen);
pdaok = 0;
break;
}
/* Test the code */
if (!hfa384x_isgood_pdrcode(pdrcode)) {
- printk(KERN_ERR "pdrcode invalid=%d\n",
- pdrcode);
+ pr_err("pdrcode invalid=%d\n", pdrcode);
pdaok = 0;
break;
}
@@ -2489,14 +2480,13 @@ int hfa384x_drvr_readpda(hfa384x_t *hw, void *buf, unsigned int len)
}
}
if (pdaok) {
- printk(KERN_INFO
- "PDA Read from 0x%08x in %s space.\n",
- pdaloc[i].cardaddr,
- pdaloc[i].auxctl == 0 ? "EXTDS" :
- pdaloc[i].auxctl == 1 ? "NV" :
- pdaloc[i].auxctl == 2 ? "PHY" :
- pdaloc[i].auxctl == 3 ? "ICSRAM" :
- "<bogus auxctl>");
+ pr_info("PDA Read from 0x%08x in %s space\n",
+ pdaloc[i].cardaddr,
+ pdaloc[i].auxctl == 0 ? "EXTDS" :
+ pdaloc[i].auxctl == 1 ? "NV" :
+ pdaloc[i].auxctl == 2 ? "PHY" :
+ pdaloc[i].auxctl == 3 ? "ICSRAM" :
+ "<bogus auxctl>");
break;
}
}
@@ -2569,20 +2559,20 @@ int hfa384x_drvr_start(hfa384x_t *hw)
result =
usb_get_status(hw->usb, USB_RECIP_ENDPOINT, hw->endp_in, &status);
if (result < 0) {
- printk(KERN_ERR "Cannot get bulk in endpoint status.\n");
+ pr_err("Cannot get bulk in endpoint status\n");
goto done;
}
if ((status == 1) && usb_clear_halt(hw->usb, hw->endp_in))
- printk(KERN_ERR "Failed to reset bulk in endpoint.\n");
+ pr_err("Failed to reset bulk in endpoint\n");
result =
usb_get_status(hw->usb, USB_RECIP_ENDPOINT, hw->endp_out, &status);
if (result < 0) {
- printk(KERN_ERR "Cannot get bulk out endpoint status.\n");
+ pr_err("Cannot get bulk out endpoint status\n");
goto done;
}
if ((status == 1) && usb_clear_halt(hw->usb, hw->endp_out))
- printk(KERN_ERR "Failed to reset bulk out endpoint.\n");
+ pr_err("Failed to reset bulk out endpoint\n");
/* Synchronous unlink, in case we're trying to restart the driver */
usb_kill_urb(&hw->rx_urb);
@@ -2590,8 +2580,7 @@ int hfa384x_drvr_start(hfa384x_t *hw)
/* Post the IN urb */
result = submit_rx_urb(hw, GFP_KERNEL);
if (result != 0) {
- printk(KERN_ERR
- "Fatal, failed to submit RX URB, result=%d\n", result);
+ pr_err("Fatal, failed to submit RX URB, result=%d\n", result);
goto done;
}
@@ -2610,8 +2599,7 @@ int hfa384x_drvr_start(hfa384x_t *hw)
result = result2 = hfa384x_cmd_initialize(hw);
if (result1 != 0) {
if (result2 != 0) {
- printk(KERN_ERR
- "cmd_initialize() failed on two attempts, results %d and %d\n",
+ pr_err("cmd_initialize() failed on two attempts, results %d and %d\n",
result1, result2);
usb_kill_urb(&hw->rx_urb);
goto done;
@@ -2622,11 +2610,9 @@ int hfa384x_drvr_start(hfa384x_t *hw)
("but second attempt succeeded. All should be ok\n");
}
} else if (result2 != 0) {
- printk(KERN_WARNING
- "First cmd_initialize() succeeded, but second attempt failed (result=%d)\n",
- result2);
- printk(KERN_WARNING
- "Most likely the card will be functional\n");
+ pr_warning("First cmd_initialize() succeeded, but second attempt failed (result=%d)\n",
+ result2);
+ pr_warning("Most likely the card will be functional\n");
goto done;
}
@@ -2716,7 +2702,7 @@ int hfa384x_drvr_txframe(hfa384x_t *hw, struct sk_buff *skb,
char *ptr;
if (hw->tx_urb.status == -EINPROGRESS) {
- printk(KERN_WARNING "TX URB already in use\n");
+ pr_warning("TX URB already in use\n");
result = 3;
goto exit;
}
@@ -2791,7 +2777,7 @@ int hfa384x_drvr_txframe(hfa384x_t *hw, struct sk_buff *skb,
result = 1;
ret = submit_tx_urb(hw, &hw->tx_urb, GFP_ATOMIC);
if (ret != 0) {
- printk(KERN_ERR "submit_tx_urb() failed, error=%d\n", ret);
+ pr_err("submit_tx_urb() failed, error=%d\n", ret);
result = 3;
}
@@ -3014,7 +3000,7 @@ static void unlocked_usbctlx_complete(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx)
break;
default:
- printk(KERN_ERR "CTLX[%d] not in a terminating state(%s)\n",
+ pr_err("CTLX[%d] not in a terminating state(%s)\n",
le16_to_cpu(ctlx->outbuf.type), ctlxstr(ctlx->state));
break;
} /* switch */
@@ -3096,9 +3082,8 @@ static void hfa384x_usbctlxq_run(hfa384x_t *hw)
* this CTLX back in the "pending" queue
* and schedule a reset ...
*/
- printk(KERN_WARNING
- "%s tx pipe stalled: requesting reset\n",
- hw->wlandev->netdev->name);
+ pr_warning("%s tx pipe stalled: requesting reset\n",
+ hw->wlandev->netdev->name);
list_move(&head->list, &hw->ctlxq.pending);
set_bit(WORK_TX_HALT, &hw->usb_flags);
schedule_work(&hw->usb_work);
@@ -3106,12 +3091,12 @@ static void hfa384x_usbctlxq_run(hfa384x_t *hw)
}
if (result == -ESHUTDOWN) {
- printk(KERN_WARNING "%s urb shutdown!\n",
- hw->wlandev->netdev->name);
+ pr_warning("%s urb shutdown!\n",
+ hw->wlandev->netdev->name);
break;
}
- printk(KERN_ERR "Failed to submit CTLX[%d]: error=%d\n",
+ pr_err("Failed to submit CTLX[%d]: error=%d\n",
le16_to_cpu(head->outbuf.type), result);
unlocked_usbctlx_complete(hw, head);
} /* while */
@@ -3178,8 +3163,8 @@ static void hfa384x_usbin_callback(struct urb *urb)
break;
case -EPIPE:
- printk(KERN_WARNING "%s rx pipe stalled: requesting reset\n",
- wlandev->netdev->name);
+ pr_warning("%s rx pipe stalled: requesting reset\n",
+ wlandev->netdev->name);
if (!test_and_set_bit(WORK_RX_HALT, &hw->usb_flags))
schedule_work(&hw->usb_work);
++(wlandev->linux_stats.rx_errors);
@@ -3229,8 +3214,7 @@ static void hfa384x_usbin_callback(struct urb *urb)
result = submit_rx_urb(hw, GFP_ATOMIC);
if (result != 0) {
- printk(KERN_ERR
- "Fatal, failed to resubmit rx_urb. error=%d\n",
+ pr_err("Fatal, failed to resubmit rx_urb. error=%d\n",
result);
}
}
@@ -3365,10 +3349,9 @@ retry:
* Check that our message is what we're expecting ...
*/
if (ctlx->outbuf.type != intype) {
- printk(KERN_WARNING
- "Expected IN[%d], received IN[%d] - ignored.\n",
- le16_to_cpu(ctlx->outbuf.type),
- le16_to_cpu(intype));
+ pr_warning("Expected IN[%d], received IN[%d] - ignored\n",
+ le16_to_cpu(ctlx->outbuf.type),
+ le16_to_cpu(intype));
goto unlock;
}
@@ -3402,9 +3385,8 @@ retry:
/*
* Throw this CTLX away ...
*/
- printk(KERN_ERR
- "Matched IN URB, CTLX[%d] in invalid state(%s)."
- " Discarded.\n",
+ pr_err("Matched IN URB, CTLX[%d] in invalid state(%s)."
+ " Discarded\n",
le16_to_cpu(ctlx->outbuf.type),
ctlxstr(ctlx->state));
if (unlocked_usbctlx_cancel_async(hw, ctlx) == 0)
@@ -3540,8 +3522,8 @@ static void hfa384x_usbin_rx(wlandevice_t *wlandev, struct sk_buff *skb)
break;
default:
- printk(KERN_WARNING "Received frame on unsupported port=%d\n",
- HFA384x_RXSTATUS_MACPORT_GET(usbin->rxfrm.desc.status));
+ pr_warning("Received frame on unsupported port=%d\n",
+ HFA384x_RXSTATUS_MACPORT_GET(usbin->rxfrm.desc.status));
goto done;
break;
}
@@ -3602,8 +3584,7 @@ static void hfa384x_int_rxmonitor(wlandevice_t *wlandev,
skb = dev_alloc_skb(skblen);
if (skb == NULL) {
- printk(KERN_ERR
- "alloc_skb failed trying to allocate %d bytes\n",
+ pr_err("alloc_skb failed trying to allocate %d bytes\n",
skblen);
return;
}
@@ -3718,9 +3699,8 @@ static void hfa384x_usbout_callback(struct urb *urb)
case -EPIPE:
{
hfa384x_t *hw = wlandev->priv;
- printk(KERN_WARNING
- "%s tx pipe stalled: requesting reset\n",
- wlandev->netdev->name);
+ pr_warning("%s tx pipe stalled: requesting reset\n",
+ wlandev->netdev->name);
if (!test_and_set_bit
(WORK_TX_HALT, &hw->usb_flags))
schedule_work(&hw->usb_work);
@@ -3751,8 +3731,7 @@ static void hfa384x_usbout_callback(struct urb *urb)
break;
default:
- printk(KERN_INFO "unknown urb->status=%d\n",
- urb->status);
+ pr_info("unknown urb->status=%d\n", urb->status);
++(wlandev->linux_stats.tx_errors);
break;
} /* switch */
@@ -3845,8 +3824,7 @@ retry:
default:
/* This is NOT a valid CTLX "success" state! */
- printk(KERN_ERR
- "Illegal CTLX[%d] success state(%s, %d) in OUT URB\n",
+ pr_err("Illegal CTLX[%d] success state(%s, %d) in OUT URB\n",
le16_to_cpu(ctlx->outbuf.type),
ctlxstr(ctlx->state), urb->status);
break;
@@ -3855,9 +3833,8 @@ retry:
/* If the pipe has stalled then we need to reset it */
if ((urb->status == -EPIPE) &&
!test_and_set_bit(WORK_TX_HALT, &hw->usb_flags)) {
- printk(KERN_WARNING
- "%s tx pipe stalled: requesting reset\n",
- hw->wlandev->netdev->name);
+ pr_warning("%s tx pipe stalled: requesting reset\n",
+ hw->wlandev->netdev->name);
schedule_work(&hw->usb_work);
}
--
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