From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Matthias Kaehlcke <mka@chromium.org>,
Marcel Holtmann <marcel@holtmann.org>,
Sasha Levin <sashal@kernel.org>,
linux-bluetooth@vger.kernel.org
Subject: [PATCH AUTOSEL 4.9 03/16] Bluetooth: btqca: Add a short delay before downloading the NVM
Date: Thu, 29 Aug 2019 14:17:21 -0400 [thread overview]
Message-ID: <20190829181736.9040-3-sashal@kernel.org> (raw)
In-Reply-To: <20190829181736.9040-1-sashal@kernel.org>
From: Matthias Kaehlcke <mka@chromium.org>
[ Upstream commit 8059ba0bd0e4694e51c2ee6438a77b325f06c0d5 ]
On WCN3990 downloading the NVM sometimes fails with a "TLV response
size mismatch" error:
[ 174.949955] Bluetooth: btqca.c:qca_download_firmware() hci0: QCA Downloading qca/crnv21.bin
[ 174.958718] Bluetooth: btqca.c:qca_tlv_send_segment() hci0: QCA TLV response size mismatch
It seems the controller needs a short time after downloading the
firmware before it is ready for the NVM. A delay as short as 1 ms
seems sufficient, make it 10 ms just in case. No event is received
during the delay, hence we don't just silently drop an extra event.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/bluetooth/btqca.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
index 28afd5d585f95..b7dfa4afd5169 100644
--- a/drivers/bluetooth/btqca.c
+++ b/drivers/bluetooth/btqca.c
@@ -363,6 +363,9 @@ int qca_uart_setup_rome(struct hci_dev *hdev, uint8_t baudrate)
return err;
}
+ /* Give the controller some time to get ready to receive the NVM */
+ msleep(10);
+
/* Download NVM configuration */
config.type = TLV_TYPE_NVM;
snprintf(config.fwname, sizeof(config.fwname), "qca/nvm_%08x.bin",
--
2.20.1
next prev parent reply other threads:[~2019-08-29 18:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-29 18:17 [PATCH AUTOSEL 4.9 01/16] net: tundra: tsi108: use spin_lock_irqsave instead of spin_lock_irq in IRQ context Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 02/16] net: tc35815: Explicitly check NET_IP_ALIGN is not zero in tc35815_rx Sasha Levin
2019-08-29 18:17 ` Sasha Levin [this message]
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 04/16] ibmveth: Convert multicast list size for little-endian system Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 05/16] gpio: Fix build error of function redefinition Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 06/16] cxgb4: fix a memory leak bug Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 07/16] net: myri10ge: fix memory leaks Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 08/16] cx82310_eth: fix a memory leak bug Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 09/16] net: kalmia: fix memory leaks Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 10/16] wimax/i2400m: fix a memory leak bug Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 11/16] ravb: Fix use-after-free ravb_tstamp_skb Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 12/16] Tools: hv: kvp: eliminate 'may be used uninitialized' warning Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 13/16] IB/mlx4: Fix memory leaks Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 14/16] ceph: fix buffer free while holding i_ceph_lock in __ceph_setxattr() Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 15/16] ceph: fix buffer free while holding i_ceph_lock in fill_inode() Sasha Levin
2019-08-29 18:17 ` [PATCH AUTOSEL 4.9 16/16] KVM: arm/arm64: Only skip MMIO insn once Sasha Levin
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=20190829181736.9040-3-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=linux-bluetooth@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=marcel@holtmann.org \
--cc=mka@chromium.org \
--cc=stable@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).