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From: Jakub Kicinski <kuba@kernel.org>
To: Fan Gong <gongfan1@huawei.com>
Cc: Zhu Yikai <zhuyikai1@h-partners.com>, <netdev@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>,
	Andrew Lunn <andrew+netdev@lunn.ch>, <linux-doc@vger.kernel.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Bjorn Helgaas <helgaas@kernel.org>, luosifu <luosifu@huawei.com>,
	Xin Guo <guoxin09@huawei.com>,
	Shen Chenyang <shenchenyang1@hisilicon.com>,
	Zhou Shuai <zhoushuai28@huawei.com>, Wu Like <wulike1@huawei.com>,
	Shi Jing <shijing34@huawei.com>,
	Meny Yossefi <meny.yossefi@huawei.com>,
	Gur Stavi <gur.stavi@huawei.com>, Lee Trager <lee@trager.us>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Suman Ghosh <sumang@marvell.com>,
	Przemek Kitszel <przemyslaw.kitszel@intel.com>,
	Joe Damato <jdamato@fastly.com>,
	Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: Re: [PATCH net-next v04 1/8] hinic3: Async Event Queue interfaces
Date: Tue, 24 Jun 2025 18:04:15 -0700	[thread overview]
Message-ID: <20250624180415.54d0f9ab@kernel.org> (raw)
In-Reply-To: <3fefa626dc1ad068d2994a3cd5d20fb7b8136990.1750665915.git.zhuyikai1@h-partners.com>

On Tue, 24 Jun 2025 08:14:22 +0800 Fan Gong wrote:
> Add async event queue interfaces initialization.
> It allows driver to handle async events reported by HW.

Unfortunately this patch does not build cleanly:

../drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c:203:6: warning: variable 'err' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
  203 |         if (eq->type == HINIC3_AEQ)
      |             ^~~~~~~~~~~~~~~~~~~~~~
../drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c:206:22: note: uninitialized use occurs here
  206 |         set_eq_cons_idx(eq, err ? HINIC3_EQ_NOT_ARMED :
      |                             ^~~
../drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c:203:2: note: remove the 'if' if its condition is always true
  203 |         if (eq->type == HINIC3_AEQ)
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~
  204 |                 err = aeq_irq_handler(eq);
../drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c:201:9: note: initialize the variable 'err' to silence this warning
  201 |         int err;
      |                ^
      |                 = 0
../drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c:346:6: warning: variable 'err' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
  346 |         if (eq->type == HINIC3_AEQ) {
      |             ^~~~~~~~~~~~~~~~~~~~~~
../drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c:355:9: note: uninitialized use occurs here
  355 |         return err;
      |                ^~~
../drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c:346:2: note: remove the 'if' if its condition is always true
  346 |         if (eq->type == HINIC3_AEQ) {
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/ethernet/huawei/hinic3/hinic3_eqs.c:344:9: note: initialize the variable 'err' to silence this warning
  344 |         int err;
      |                ^
      |                 = 0
-- 
pw-bot: cr

  reply	other threads:[~2025-06-25  1:04 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-24  0:14 [PATCH net-next v04 0/8] net: hinic3: Add a driver for Huawei 3rd gen NIC - management interfaces Fan Gong
2025-06-24  0:14 ` [PATCH net-next v04 1/8] hinic3: Async Event Queue interfaces Fan Gong
2025-06-25  1:04   ` Jakub Kicinski [this message]
2025-06-24  0:14 ` [PATCH net-next v04 2/8] hinic3: Complete " Fan Gong
2025-06-24  0:14 ` [PATCH net-next v04 3/8] hinic3: Command Queue framework Fan Gong
2025-06-24  0:14 ` [PATCH net-next v04 4/8] hinic3: Command Queue interfaces Fan Gong
2025-06-24  0:14 ` [PATCH net-next v04 5/8] hinic3: TX & RX Queue coalesce interfaces Fan Gong
2025-06-24  0:14 ` [PATCH net-next v04 6/8] hinic3: Mailbox framework Fan Gong
2025-06-24  0:14 ` [PATCH net-next v04 7/8] hinic3: Mailbox management interfaces Fan Gong
2025-06-24  0:14 ` [PATCH net-next v04 8/8] hinic3: Interrupt request configuration Fan Gong

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