linux-wireless.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Jiri Kosina <jikos@kernel.org>
To: Kalle Valo <kvalo@codeaurora.org>
Cc: Heiner Kallweit <hkallweit1@gmail.com>,
	linux-wireless <linux-wireless@vger.kernel.org>
Subject: [PATCH v2] iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_gen2_enqueue_hcmd()
Date: Sat, 17 Apr 2021 11:13:39 +0200 (CEST)	[thread overview]
Message-ID: <nycvar.YFH.7.76.2104171112390.18270@cbobk.fhfr.pm> (raw)
In-Reply-To: <nycvar.YFH.7.76.2104171105580.18270@cbobk.fhfr.pm>

From: Jiri Kosina <jkosina@suse.cz>

Analogically to what we did in 2800aadc18a6 ("iwlwifi: Fix softirq/hardirq 
disabling in iwl_pcie_enqueue_hcmd()"), we must apply the same fix to 
iwl_pcie_gen2_enqueue_hcmd(), as it's being called from exactly the same 
contexts.

Reported-by: Heiner Kallweit <hkallweit1@gmail.com
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
--- 

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
index 4456abb9a074..34bde8c87324 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
@@ -40,6 +40,7 @@ int iwl_pcie_gen2_enqueue_hcmd(struct iwl_trans *trans,
 	const u8 *cmddata[IWL_MAX_CMD_TBS_PER_TFD];
 	u16 cmdlen[IWL_MAX_CMD_TBS_PER_TFD];
 	struct iwl_tfh_tfd *tfd;
+	unsigned long flags;
 
 	copy_size = sizeof(struct iwl_cmd_header_wide);
 	cmd_size = sizeof(struct iwl_cmd_header_wide);
@@ -108,14 +109,14 @@ int iwl_pcie_gen2_enqueue_hcmd(struct iwl_trans *trans,
 		goto free_dup_buf;
 	}
 
-	spin_lock_bh(&txq->lock);
+	spin_lock_irqsave(&txq->lock, flags);
 
 	idx = iwl_txq_get_cmd_index(txq, txq->write_ptr);
 	tfd = iwl_txq_get_tfd(trans, txq, txq->write_ptr);
 	memset(tfd, 0, sizeof(*tfd));
 
 	if (iwl_txq_space(trans, txq) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) {
-		spin_unlock_bh(&txq->lock);
+		spin_unlock_irqrestore(&txq->lock, flags);
 
 		IWL_ERR(trans, "No space in command queue\n");
 		iwl_op_mode_cmd_queue_full(trans->op_mode);
@@ -250,7 +251,7 @@ int iwl_pcie_gen2_enqueue_hcmd(struct iwl_trans *trans,
 	spin_unlock(&trans_pcie->reg_lock);
 
 out:
-	spin_unlock_bh(&txq->lock);
+	spin_unlock_irqrestore(&txq->lock, flags);
 free_dup_buf:
 	if (idx < 0)
 		kfree(dup_buf);



  reply	other threads:[~2021-04-17  9:13 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07  5:55 iwl_pcie_gen2_enqueue_hcmd needs same fix as iwl_pcie_enqueue_hcmd Heiner Kallweit
2021-04-07  7:51 ` [PATCH] iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_gen2_enqueue_hcmd() Jiri Kosina
2021-04-07  7:55   ` Johannes Berg
2021-04-07  7:56     ` Johannes Berg
2021-04-07  8:30       ` Heiner Kallweit
2021-04-17  8:50   ` Kalle Valo
     [not found]   ` <20210417085010.58522C433C6@smtp.codeaurora.org>
2021-04-17  9:12     ` Jiri Kosina
2021-04-17  9:13       ` Jiri Kosina [this message]
2021-04-19 17:36         ` [PATCH v2] " Kalle Valo
2021-04-17  9:24       ` [PATCH] " Jiri Kosina
2021-04-17 12:06         ` Sedat Dilek
2021-04-18  6:47           ` Sedat Dilek
2021-04-18  6:46       ` Kalle Valo
2021-04-18  7:07         ` Sedat Dilek

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=nycvar.YFH.7.76.2104171112390.18270@cbobk.fhfr.pm \
    --to=jikos@kernel.org \
    --cc=hkallweit1@gmail.com \
    --cc=kvalo@codeaurora.org \
    --cc=linux-wireless@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).