linux-kernel - Re: [PATCH] drivers: net: wireless: atmel: check memory allocation failure

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Message-ID: <1503391305.2409.12.camel@redhat.com>
Date:   Tue, 22 Aug 2017 10:41:45 +0200
From:   Matteo Croce <mcroce@...hat.com>
To:     Himanshu Jha <himanshujha199640@...il.com>, kvalo@...eaurora.org
Cc:     linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH] drivers: net: wireless: atmel: check memory allocation
 failure

Il giorno mar, 22/08/2017 alle 13.41 +0530, Himanshu Jha ha scritto:
> Check memory allocation failure and return -ENOMEM if failure
> occurs.
> 
> Signed-off-by: Himanshu Jha <himanshujha199640@...il.com>
> ---
>  drivers/net/wireless/atmel/at76c50x-usb.c | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/net/wireless/atmel/at76c50x-usb.c
> b/drivers/net/wireless/atmel/at76c50x-usb.c
> index 09defbc..73f0924 100644
> --- a/drivers/net/wireless/atmel/at76c50x-usb.c
> +++ b/drivers/net/wireless/atmel/at76c50x-usb.c
> @@ -940,7 +940,7 @@ static void at76_dump_mib_mac_addr(struct
> at76_priv *priv)
>  					 GFP_KERNEL);
>  
>  	if (!m)
> -		return;
> +		return -ENOMEM;
>  
>  	ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
>  			   sizeof(struct mib_mac_addr));
> @@ -969,7 +969,7 @@ static void at76_dump_mib_mac_wep(struct
> at76_priv *priv)
>  	struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep),
> GFP_KERNEL);
>  
>  	if (!m)
> -		return;
> +		return -ENOMEM;
>  
>  	ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
>  			   sizeof(struct mib_mac_wep));
> @@ -1006,7 +1006,7 @@ static void at76_dump_mib_mac_mgmt(struct
> at76_priv *priv)
>  					 GFP_KERNEL);
>  
>  	if (!m)
> -		return;
> +		return -ENOMEM;
>  
>  	ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
>  			   sizeof(struct mib_mac_mgmt));
> @@ -1043,7 +1043,7 @@ static void at76_dump_mib_mac(struct at76_priv
> *priv)
>  	struct mib_mac *m = kmalloc(sizeof(struct mib_mac),
> GFP_KERNEL);
>  
>  	if (!m)
> -		return;
> +		return -ENOMEM;
>  
>  	ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct
> mib_mac));
>  	if (ret < 0) {
> @@ -1080,7 +1080,7 @@ static void at76_dump_mib_phy(struct at76_priv
> *priv)
>  	struct mib_phy *m = kmalloc(sizeof(struct mib_phy),
> GFP_KERNEL);
>  
>  	if (!m)
> -		return;
> +		return -ENOMEM;
>  
>  	ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct
> mib_phy));
>  	if (ret < 0) {
> @@ -1113,7 +1113,7 @@ static void at76_dump_mib_local(struct
> at76_priv *priv)
>  	struct mib_local *m = kmalloc(sizeof(*m), GFP_KERNEL);
>  
>  	if (!m)
> -		return;
> +		return -ENOMEM;
>  
>  	ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(*m));
>  	if (ret < 0) {
> @@ -1138,7 +1138,7 @@ static void at76_dump_mib_mdomain(struct
> at76_priv *priv)
>  	struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain),
> GFP_KERNEL);
>  
>  	if (!m)
> -		return;
> +		return -ENOMEM;
>  
>  	ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
>  			   sizeof(struct mib_mdomain));

Perhaps these functions should return something instead of being void.

Regards,

-- 
Matteo Croce
per aspera ad upstream