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Date: Fri, 06 Mar 2015 10:27:31 -0500
From: Jes Sorensen <Jes.Sorensen@...hat.com>
To: Quentin Lambert <lambert.quentin@...il.com>
Cc: Larry Finger <Larry.Finger@...inger.net>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
kernel-janitors@...r.kernel.org, linux-wireless@...r.kernel.org,
devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] staging: rtl8723au: Remove unnecessary OOM message
Quentin Lambert <lambert.quentin@...il.com> writes:
> This patch reduces the kernel size by removing error messages that duplicate
> the normal OOM message.
>
> A simplified version of the semantic patch that finds this problem is as
> follows: (http://coccinelle.lip6.fr)
This patch removes useful warnings about what allocation failed. The
messages removed are NOT duplicate!
NACK
Jes
>
> @@
> identifier f,print,l;
> expression e;
> constant char[] c;
> @@
>
> e = \(kzalloc\|kmalloc\|devm_kzalloc\|devm_kmalloc\)(...);
> if (e == NULL) {
> <+...
> - print(...,c,...);
> ... when any
> (
> goto l;
> |
> return ...;
> )
> ...+> }
>
> Signed-off-by: Quentin Lambert <lambert.quentin@...il.com>
> ---
> drivers/staging/rtl8723au/hal/rtl8723a_cmd.c | 8 ++------
> drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c | 8 ++------
> drivers/staging/rtl8723au/hal/usb_ops_linux.c | 6 +-----
> drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c | 5 -----
> 4 files changed, 5 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c b/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
> index 7b56411..38f5b7f 100644
> --- a/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
> +++ b/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
> @@ -462,10 +462,8 @@ static void SetFwRsvdPagePkt(struct rtw_adapter *padapter, bool bDLFinished)
> DBG_8723A("%s\n", __func__);
>
> ReservedPagePacket = kzalloc(1000, GFP_KERNEL);
> - if (ReservedPagePacket == NULL) {
> - DBG_8723A("%s: alloc ReservedPagePacket fail!\n", __func__);
> + if (ReservedPagePacket == NULL)
> return;
> - }
>
> pHalData = GET_HAL_DATA(padapter);
> pxmitpriv = &padapter->xmitpriv;
> @@ -669,10 +667,8 @@ static void SetFwRsvdPagePkt_BTCoex(struct rtw_adapter *padapter)
> DBG_8723A("+%s\n", __func__);
>
> ReservedPagePacket = kzalloc(1024, GFP_KERNEL);
> - if (ReservedPagePacket == NULL) {
> - DBG_8723A("%s: alloc ReservedPagePacket fail!\n", __func__);
> + if (ReservedPagePacket == NULL)
> return;
> - }
>
> pHalData = GET_HAL_DATA(padapter);
> pxmitpriv = &padapter->xmitpriv;
> diff --git a/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c b/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
> index a5eadd4..6d50b09 100644
> --- a/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
> +++ b/drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c
> @@ -401,10 +401,8 @@ hal_ReadEFuse_WiFi(struct rtw_adapter *padapter,
> }
>
> efuseTbl = kmalloc(EFUSE_MAP_LEN_8723A, GFP_KERNEL);
> - if (efuseTbl == NULL) {
> - DBG_8723A("%s: alloc efuseTbl fail!\n", __func__);
> + if (efuseTbl == NULL)
> return;
> - }
> /* 0xff will be efuse default value instead of 0x00. */
> memset(efuseTbl, 0xFF, EFUSE_MAP_LEN_8723A);
>
> @@ -494,10 +492,8 @@ hal_ReadEFuse_BT(struct rtw_adapter *padapter,
> }
>
> efuseTbl = kmalloc(EFUSE_BT_MAP_LEN, GFP_KERNEL);
> - if (efuseTbl == NULL) {
> - DBG_8723A("%s: efuseTbl malloc fail!\n", __func__);
> + if (efuseTbl == NULL)
> return;
> - }
> /* 0xff will be efuse default value instead of 0x00. */
> memset(efuseTbl, 0xFF, EFUSE_BT_MAP_LEN);
>
> diff --git a/drivers/staging/rtl8723au/hal/usb_ops_linux.c b/drivers/staging/rtl8723au/hal/usb_ops_linux.c
> index a6d16ad..f1e9202 100644
> --- a/drivers/staging/rtl8723au/hal/usb_ops_linux.c
> +++ b/drivers/staging/rtl8723au/hal/usb_ops_linux.c
> @@ -256,12 +256,8 @@ static void usb_read_interrupt_complete(struct urb *purb)
> c2w = kmalloc(sizeof(struct evt_work),
> GFP_ATOMIC);
>
> - if (!c2w) {
> - printk(KERN_WARNING "%s: unable to "
> - "allocate work buffer\n",
> - __func__);
> + if (!c2w)
> goto urb_submit;
> - }
>
> c2w->adapter = padapter;
> INIT_WORK(&c2w->work, rtw_evt_work);
> diff --git a/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c b/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
> index 537bd82..40bdf4b 100644
> --- a/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
> +++ b/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
> @@ -1327,8 +1327,6 @@ static int rtw_cfg80211_set_probe_req_wpsp2pie(struct rtw_adapter *padapter,
> pmlmepriv->wps_probe_req_ie = kmemdup(wps_ie, wps_ie[1],
> GFP_KERNEL);
> if (pmlmepriv->wps_probe_req_ie == NULL) {
> - DBG_8723A("%s()-%d: kmalloc() ERROR!\n",
> - __func__, __LINE__);
> return -EINVAL;
> }
> pmlmepriv->wps_probe_req_ie_len = wps_ie[1];
> @@ -2619,8 +2617,6 @@ static int rtw_cfg80211_add_monitor_if(struct rtw_adapter *padapter, char *name,
> /* wdev */
> mon_wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
> if (!mon_wdev) {
> - DBG_8723A("%s(%s): allocate mon_wdev fail\n", __func__,
> - padapter->pnetdev->name);
> ret = -ENOMEM;
> goto out;
> }
> @@ -3275,7 +3271,6 @@ int rtw_wdev_alloc(struct rtw_adapter *padapter, struct device *dev)
> /* wdev */
> wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
> if (!wdev) {
> - DBG_8723A("Couldn't allocate wireless device\n");
> ret = -ENOMEM;
> goto free_wiphy;
> }
--
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