From: Christophe JAILLET <christophe.jaillet@wanadoo.fr> To: Nigel Christian <nigel.l.christian@gmail.com>, marcel@holtmann.org Cc: johan.hedberg@gmail.com, kernel-janitors@vger.kernel.org, linux-bluetooth@vger.kernel.org Subject: Re: [PATCH][v2] Bluetooth: hci_qca: resolve various warnings Date: Wed, 11 Nov 2020 11:47:48 +0100 [thread overview] Message-ID: <187b1016-06cf-9f6c-eeac-4bac8c970d58@wanadoo.fr> (raw) In-Reply-To: <20201111045538.GA90261@fedora-project> Le 11/11/2020 à 05:55, Nigel Christian a écrit : > Replace symbolic permissions with octal values. Use usleep_range > for small msec values due to the fact that msleep() less than > 20ms may have unexpected behavior/sleep longer. > > - https://lkml.org/lkml/2016/8/2/1945 > - Documentation/timers/timers-howto.rst > > Signed-off-by: Nigel Christian <nigel.l.christian@gmail.com> > --- > drivers/bluetooth/hci_qca.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c > index 2d3f1f179a1e..039fb117bd8f 100644 > --- a/drivers/bluetooth/hci_qca.c > +++ b/drivers/bluetooth/hci_qca.c > @@ -631,7 +631,7 @@ static void qca_debugfs_init(struct hci_dev *hdev) > ibs_dir = debugfs_create_dir("ibs", hdev->debugfs); > > /* read only */ > - mode = S_IRUGO; > + mode = 0444; > debugfs_create_u8("tx_ibs_state", mode, ibs_dir, &qca->tx_ibs_state); > debugfs_create_u8("rx_ibs_state", mode, ibs_dir, &qca->rx_ibs_state); > debugfs_create_u64("ibs_sent_sleeps", mode, ibs_dir, > @@ -658,7 +658,7 @@ static void qca_debugfs_init(struct hci_dev *hdev) > debugfs_create_u32("vote_off_ms", mode, ibs_dir, &qca->vote_off_ms); > > /* read/write */ > - mode = S_IRUGO | S_IWUSR; > + mode = 0644; > debugfs_create_u32("wake_retrans", mode, ibs_dir, &qca->wake_retrans); > debugfs_create_u32("tx_idle_delay", mode, ibs_dir, > &qca->tx_idle_delay); > @@ -1302,7 +1302,7 @@ static int qca_set_baudrate(struct hci_dev *hdev, uint8_t baudrate) > > /* Give the controller time to process the request */ > if (qca_is_wcn399x(qca_soc_type(hu))) > - msleep(10); > + usleep_range(1000, 10000); This... > else > msleep(300); > > @@ -1350,7 +1350,7 @@ static int qca_send_power_pulse(struct hci_uart *hu, bool on) > if (on) > msleep(100); > else > - msleep(10); > + usleep_range(1000, 10000); and this change change a delay which is expected to be 10 ms, and will likely be ~20 ms, into a delay which can be down to 1 ms. Is it intended or tested? I've not looked at the datasheet, but it looks spurious. Just my 2c. CJ > > return 0; > } >
WARNING: multiple messages have this Message-ID (diff)
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr> To: Nigel Christian <nigel.l.christian@gmail.com>, marcel@holtmann.org Cc: johan.hedberg@gmail.com, kernel-janitors@vger.kernel.org, linux-bluetooth@vger.kernel.org Subject: Re: [PATCH][v2] Bluetooth: hci_qca: resolve various warnings Date: Wed, 11 Nov 2020 10:47:48 +0000 [thread overview] Message-ID: <187b1016-06cf-9f6c-eeac-4bac8c970d58@wanadoo.fr> (raw) In-Reply-To: <20201111045538.GA90261@fedora-project> Le 11/11/2020 à 05:55, Nigel Christian a écrit : > Replace symbolic permissions with octal values. Use usleep_range > for small msec values due to the fact that msleep() less than > 20ms may have unexpected behavior/sleep longer. > > - https://lkml.org/lkml/2016/8/2/1945 > - Documentation/timers/timers-howto.rst > > Signed-off-by: Nigel Christian <nigel.l.christian@gmail.com> > --- > drivers/bluetooth/hci_qca.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c > index 2d3f1f179a1e..039fb117bd8f 100644 > --- a/drivers/bluetooth/hci_qca.c > +++ b/drivers/bluetooth/hci_qca.c > @@ -631,7 +631,7 @@ static void qca_debugfs_init(struct hci_dev *hdev) > ibs_dir = debugfs_create_dir("ibs", hdev->debugfs); > > /* read only */ > - mode = S_IRUGO; > + mode = 0444; > debugfs_create_u8("tx_ibs_state", mode, ibs_dir, &qca->tx_ibs_state); > debugfs_create_u8("rx_ibs_state", mode, ibs_dir, &qca->rx_ibs_state); > debugfs_create_u64("ibs_sent_sleeps", mode, ibs_dir, > @@ -658,7 +658,7 @@ static void qca_debugfs_init(struct hci_dev *hdev) > debugfs_create_u32("vote_off_ms", mode, ibs_dir, &qca->vote_off_ms); > > /* read/write */ > - mode = S_IRUGO | S_IWUSR; > + mode = 0644; > debugfs_create_u32("wake_retrans", mode, ibs_dir, &qca->wake_retrans); > debugfs_create_u32("tx_idle_delay", mode, ibs_dir, > &qca->tx_idle_delay); > @@ -1302,7 +1302,7 @@ static int qca_set_baudrate(struct hci_dev *hdev, uint8_t baudrate) > > /* Give the controller time to process the request */ > if (qca_is_wcn399x(qca_soc_type(hu))) > - msleep(10); > + usleep_range(1000, 10000); This... > else > msleep(300); > > @@ -1350,7 +1350,7 @@ static int qca_send_power_pulse(struct hci_uart *hu, bool on) > if (on) > msleep(100); > else > - msleep(10); > + usleep_range(1000, 10000); and this change change a delay which is expected to be 10 ms, and will likely be ~20 ms, into a delay which can be down to 1 ms. Is it intended or tested? I've not looked at the datasheet, but it looks spurious. Just my 2c. CJ > > return 0; > } >
next prev parent reply other threads:[~2020-11-11 10:47 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-11 4:55 [PATCH][v2] Bluetooth: hci_qca: resolve various warnings Nigel Christian 2020-11-11 4:55 ` Nigel Christian 2020-11-11 9:55 ` Marcel Holtmann 2020-11-11 9:55 ` Marcel Holtmann 2020-11-11 10:47 ` Christophe JAILLET [this message] 2020-11-11 10:47 ` Christophe JAILLET 2020-11-11 14:14 ` Nigel Christian 2020-11-11 14:14 ` Nigel Christian
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