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From: Stanislaw Gruszka <sgruszka@redhat.com>
To: linux-wireless@vger.kernel.org
Cc: Felix Fietkau <nbd@nbd.name>,
	Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Subject: Re: [PATCH 1/3] mt76: usb: fix endian in mt76u_copy
Date: Tue, 9 Jul 2019 12:06:18 +0200	[thread overview]
Message-ID: <20190709100617.GA3099@redhat.com> (raw)
In-Reply-To: <1562079961-15527-2-git-send-email-sgruszka@redhat.com>

On Tue, Jul 02, 2019 at 05:05:59PM +0200, Stanislaw Gruszka wrote:
> In contrast to mt76_wr() which we use to program registers,
> on mt76_wr_copy() we should not change endian of the data.
> 
> Fixes: b40b15e1521f ("mt76: add usb support to mt76 layer")
> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
> ---
>  drivers/net/wireless/mediatek/mt76/usb.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c
> index 87ecbe290f99..db90ec6b8775 100644
> --- a/drivers/net/wireless/mediatek/mt76/usb.c
> +++ b/drivers/net/wireless/mediatek/mt76/usb.c
> @@ -165,11 +165,11 @@ static void mt76u_copy(struct mt76_dev *dev, u32 offset,
>  
>  	mutex_lock(&usb->usb_ctrl_mtx);
>  	for (i = 0; i < DIV_ROUND_UP(len, 4); i++) {
> -		put_unaligned_le32(val[i], usb->data);
> +		put_unaligned(val[i], usb->data);

This is bug as put_unaligned() use size based second argument
pointer type, correct version should looks like this:

		put_unaligned(val[i], (u32 *) usb->data);

Stanislaw

  reply	other threads:[~2019-07-09 10:06 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-02 15:05 [PATCH 0/3] mt76: usb: alignment and endianes improvements Stanislaw Gruszka
2019-07-02 15:05 ` [PATCH 1/3] mt76: usb: fix endian in mt76u_copy Stanislaw Gruszka
2019-07-09 10:06   ` Stanislaw Gruszka [this message]
2019-07-02 15:06 ` [PATCH 2/3] mt76: usb: remove unneeded {put,get}_unaligned Stanislaw Gruszka
2019-07-02 15:06 ` [PATCH 3/3] mt76: usb: use full intermediate buffer in mt76u_copy Stanislaw Gruszka
2019-07-09 10:12   ` Stanislaw Gruszka
2019-07-09 13:45     ` Felix Fietkau
2019-07-03 22:12 ` [PATCH 0/3] mt76: usb: alignment and endianes improvements Lorenzo Bianconi

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