From: Jerome Pouiller <Jerome.Pouiller@silabs.com> To: devel@driverdev.osuosl.org, linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>, "Kalle Valo" <kvalo@codeaurora.org>, "David S . Miller" <davem@davemloft.net>, "Jérôme Pouiller" <jerome.pouiller@silabs.com> Subject: [PATCH 01/19] staging: wfx: fix warning when unregister a frozen device Date: Fri, 15 May 2020 10:33:07 +0200 [thread overview] Message-ID: <20200515083325.378539-2-Jerome.Pouiller@silabs.com> (raw) In-Reply-To: <20200515083325.378539-1-Jerome.Pouiller@silabs.com> From: Jérôme Pouiller <jerome.pouiller@silabs.com> The device does not answer to the command hif_shutdown. Therefore, hif_shutdown() is a bit special. It bypasses some of work normally made by wfx_cmd_send(). In particularly, it unlock hif_cmd.lock and hif_cmd.key_renew_lock. However, if the driver notice that the device is frozen, wfx_cmd_send() stops to send data and doesn't lock the mutexes. Then, it produced a warning when hif_shutdown() tried to unlock these mutexes. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> --- drivers/staging/wfx/hif_tx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/wfx/hif_tx.c b/drivers/staging/wfx/hif_tx.c index 7f459719e7b4..3e5d9111e855 100644 --- a/drivers/staging/wfx/hif_tx.c +++ b/drivers/staging/wfx/hif_tx.c @@ -131,6 +131,8 @@ int hif_shutdown(struct wfx_dev *wdev) int ret; struct hif_msg *hif; + if (wdev->chip_frozen) + return 0; wfx_alloc_hif(0, &hif); wfx_fill_header(hif, -1, HIF_REQ_ID_SHUT_DOWN, 0); ret = wfx_cmd_send(wdev, hif, NULL, 0, true); -- 2.26.2
WARNING: multiple messages have this Message-ID (diff)
From: Jerome Pouiller <Jerome.Pouiller@silabs.com> To: devel@driverdev.osuosl.org, linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, "David S . Miller" <davem@davemloft.net>, Kalle Valo <kvalo@codeaurora.org> Subject: [PATCH 01/19] staging: wfx: fix warning when unregister a frozen device Date: Fri, 15 May 2020 10:33:07 +0200 [thread overview] Message-ID: <20200515083325.378539-2-Jerome.Pouiller@silabs.com> (raw) In-Reply-To: <20200515083325.378539-1-Jerome.Pouiller@silabs.com> From: Jérôme Pouiller <jerome.pouiller@silabs.com> The device does not answer to the command hif_shutdown. Therefore, hif_shutdown() is a bit special. It bypasses some of work normally made by wfx_cmd_send(). In particularly, it unlock hif_cmd.lock and hif_cmd.key_renew_lock. However, if the driver notice that the device is frozen, wfx_cmd_send() stops to send data and doesn't lock the mutexes. Then, it produced a warning when hif_shutdown() tried to unlock these mutexes. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> --- drivers/staging/wfx/hif_tx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/wfx/hif_tx.c b/drivers/staging/wfx/hif_tx.c index 7f459719e7b4..3e5d9111e855 100644 --- a/drivers/staging/wfx/hif_tx.c +++ b/drivers/staging/wfx/hif_tx.c @@ -131,6 +131,8 @@ int hif_shutdown(struct wfx_dev *wdev) int ret; struct hif_msg *hif; + if (wdev->chip_frozen) + return 0; wfx_alloc_hif(0, &hif); wfx_fill_header(hif, -1, HIF_REQ_ID_SHUT_DOWN, 0); ret = wfx_cmd_send(wdev, hif, NULL, 0, true); -- 2.26.2 _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
next prev parent reply other threads:[~2020-05-15 8:33 UTC|newest] Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-05-15 8:33 [PATCH 00/19] staging: wfx: various fixes Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller [this message] 2020-05-15 8:33 ` [PATCH 01/19] staging: wfx: fix warning when unregister a frozen device Jerome Pouiller 2020-05-15 8:33 ` [PATCH 02/19] staging: wfx: apply 80-columns rule to strings Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 03/19] staging: wfx: check pointers returned by allocations Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 04/19] staging: wfx: fix value of scan timeout Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 05/19] staging: wfx: fix coherency of hif_scan() prototype Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 13:53 ` Greg Kroah-Hartman 2020-05-15 13:53 ` Greg Kroah-Hartman 2020-05-15 14:01 ` Greg Kroah-Hartman 2020-05-15 14:01 ` Greg Kroah-Hartman 2020-05-15 15:03 ` Jérôme Pouiller 2020-05-15 15:03 ` Jérôme Pouiller 2020-05-15 15:09 ` Greg Kroah-Hartman 2020-05-15 15:09 ` Greg Kroah-Hartman 2020-05-15 8:33 ` [PATCH 06/19] staging: wfx: fix indentation Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 07/19] staging: wfx: fix status of dropped frames Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 08/19] staging: wfx: split out wfx_tx_fill_rates() from wfx_tx_confirm_cb() Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 09/19] staging: wfx: call wfx_tx_update_sta() before to destroy tx_priv Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 10/19] staging: wfx: fix potential use-after-free Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 11/19] staging: wfx: rename wfx_do_unjoin() into wfx_reset() Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 12/19] staging: wfx: merge wfx_stop_ap() with wfx_reset() Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 13/19] staging: wfx: fix potential dead lock between join and scan Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 14/19] staging: wfx: fix PS parameters when multiple vif are in use Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 15/19] staging: wfx: drop unnecessary filter configuration when disabling filter Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 16/19] staging: wfx: fix error reporting in wfx_start_ap() Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 17/19] staging: wfx: remove false-positive WARN() Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 18/19] staging: wfx: trace acknowledges not linked to any stations Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller 2020-05-15 8:33 ` [PATCH 19/19] staging: wfx: remove false positive warning Jerome Pouiller 2020-05-15 8:33 ` Jerome Pouiller
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