From: Rakesh Pillai <pillair@codeaurora.org> To: ath10k@lists.infradead.org Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, Rakesh Pillai <pillair@codeaurora.org> Subject: [PATCH] ath10k: Register shutdown handler Date: Fri, 26 Jun 2020 23:23:01 +0530 [thread overview] Message-ID: <1593193981-30161-1-git-send-email-pillair@codeaurora.org> (raw) As a part of device shutdown the smmu driver will be stopped and henceforth any IOVA address translation will not be done. The wlan driver, being one of the smmu driver consumer, should stop all the dma related activity as a part of shutdown, and thereby ensuring that no dma activity is done once the smmu driver shuts down. During the device shutdown, the smmu calls shutdown for all its consumers in order to indicate them to stop all their dma activities. Register the shutdown handler to stop the wlan driver and avoid any dma operations. Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.1-01040-QCAHLSWMTPLZ-1 Signed-off-by: Rakesh Pillai <pillair@codeaurora.org> --- drivers/net/wireless/ath/ath10k/snoc.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c index 354d49b..645ed5f 100644 --- a/drivers/net/wireless/ath/ath10k/snoc.c +++ b/drivers/net/wireless/ath/ath10k/snoc.c @@ -1772,9 +1772,18 @@ static int ath10k_snoc_remove(struct platform_device *pdev) return 0; } +static void ath10k_snoc_shutdown(struct platform_device *pdev) +{ + struct ath10k *ar = platform_get_drvdata(pdev); + + ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc shutdown\n"); + ath10k_snoc_remove(pdev); +} + static struct platform_driver ath10k_snoc_driver = { .probe = ath10k_snoc_probe, .remove = ath10k_snoc_remove, + .shutdown = ath10k_snoc_shutdown, .driver = { .name = "ath10k_snoc", .of_match_table = ath10k_snoc_dt_match, -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Rakesh Pillai <pillair@codeaurora.org> To: ath10k@lists.infradead.org Cc: Rakesh Pillai <pillair@codeaurora.org>, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] ath10k: Register shutdown handler Date: Fri, 26 Jun 2020 23:23:01 +0530 [thread overview] Message-ID: <1593193981-30161-1-git-send-email-pillair@codeaurora.org> (raw) As a part of device shutdown the smmu driver will be stopped and henceforth any IOVA address translation will not be done. The wlan driver, being one of the smmu driver consumer, should stop all the dma related activity as a part of shutdown, and thereby ensuring that no dma activity is done once the smmu driver shuts down. During the device shutdown, the smmu calls shutdown for all its consumers in order to indicate them to stop all their dma activities. Register the shutdown handler to stop the wlan driver and avoid any dma operations. Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.1-01040-QCAHLSWMTPLZ-1 Signed-off-by: Rakesh Pillai <pillair@codeaurora.org> --- drivers/net/wireless/ath/ath10k/snoc.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c index 354d49b..645ed5f 100644 --- a/drivers/net/wireless/ath/ath10k/snoc.c +++ b/drivers/net/wireless/ath/ath10k/snoc.c @@ -1772,9 +1772,18 @@ static int ath10k_snoc_remove(struct platform_device *pdev) return 0; } +static void ath10k_snoc_shutdown(struct platform_device *pdev) +{ + struct ath10k *ar = platform_get_drvdata(pdev); + + ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc shutdown\n"); + ath10k_snoc_remove(pdev); +} + static struct platform_driver ath10k_snoc_driver = { .probe = ath10k_snoc_probe, .remove = ath10k_snoc_remove, + .shutdown = ath10k_snoc_shutdown, .driver = { .name = "ath10k_snoc", .of_match_table = ath10k_snoc_dt_match, -- 2.7.4 _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k
next reply other threads:[~2020-06-26 17:53 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-26 17:53 Rakesh Pillai [this message] 2020-06-26 17:53 ` [PATCH] ath10k: Register shutdown handler Rakesh Pillai 2020-08-18 9:49 ` Kalle Valo 2020-08-18 9:49 ` Kalle Valo
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=1593193981-30161-1-git-send-email-pillair@codeaurora.org \ --to=pillair@codeaurora.org \ --cc=ath10k@lists.infradead.org \ --cc=linux-kernel@vger.kernel.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: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.