From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Subject: [PATCH 5.10 18/26] usb: host: xhci-rcar: Dont reload firmware after the completion
Date: Fri, 10 Sep 2021 14:30:22 +0200 [thread overview]
Message-ID: <20210910122916.840648725@linuxfoundation.org> (raw)
In-Reply-To: <20210910122916.253646001@linuxfoundation.org>
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
commit 57f3ffdc11143f56f1314972fe86fe17a0dcde85 upstream.
According to the datasheet, "Upon the completion of FW Download,
there is no need to write or reload FW.". Otherwise, it's possible
to cause unexpected behaviors. So, adds such a condition.
Fixes: 4ac8918f3a73 ("usb: host: xhci-plat: add support for the R-Car H2 and M2 xHCI controllers")
Cc: stable@vger.kernel.org # v3.17+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20210827063227.81990-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/xhci-rcar.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/usb/host/xhci-rcar.c
+++ b/drivers/usb/host/xhci-rcar.c
@@ -134,6 +134,13 @@ static int xhci_rcar_download_firmware(s
const struct soc_device_attribute *attr;
const char *firmware_name;
+ /*
+ * According to the datasheet, "Upon the completion of FW Download,
+ * there is no need to write or reload FW".
+ */
+ if (readl(regs + RCAR_USB3_DL_CTRL) & RCAR_USB3_DL_CTRL_FW_SUCCESS)
+ return 0;
+
attr = soc_device_match(rcar_quirks_match);
if (attr)
quirks = (uintptr_t)attr->data;
next prev parent reply other threads:[~2021-09-10 12:34 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-10 12:30 [PATCH 5.10 00/26] 5.10.64-rc1 review Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 01/26] igmp: Add ip_mc_list lock in ip_check_mc_rcu Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 02/26] USB: serial: mos7720: improve OOM-handling in read_mos_reg() Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 03/26] net: ll_temac: Remove left-over debug message Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 04/26] mm/page_alloc: speed up the iteration of max_order Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 05/26] net: kcov: dont select SKB_EXTENSIONS when there is no NET Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 06/26] serial: 8250: 8250_omap: Fix unused variable warning Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 07/26] net: linux/skbuff.h: combine SKB_EXTENSIONS + KCOV handling Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 08/26] tty: drop termiox user definitions Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 09/26] Revert "r8169: avoid link-up interrupt issue on RTL8106e if user enables ASPM" Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 10/26] x86/events/amd/iommu: Fix invalid Perf result due to IOMMU PMC power-gating Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 11/26] blk-mq: fix kernel panic during iterating over flush request Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 12/26] blk-mq: fix is_flush_rq Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 13/26] netfilter: nftables: avoid potential overflows on 32bit arches Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 14/26] netfilter: nf_tables: initialize set before expression setup Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 15/26] netfilter: nftables: clone set element expression template Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 16/26] blk-mq: clearing flush request reference in tags->rqs[] Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 17/26] ALSA: usb-audio: Add registration quirk for JBL Quantum 800 Greg Kroah-Hartman
2021-09-10 12:30 ` Greg Kroah-Hartman [this message]
2021-09-10 12:30 ` [PATCH 5.10 19/26] usb: gadget: tegra-xudc: fix the wrong mult value for HS isoc or intr Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 20/26] usb: mtu3: restore HS function when set SS/SSP Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 21/26] usb: mtu3: use @mult for HS isoc or intr Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 22/26] usb: mtu3: fix the wrong HS mult value Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 23/26] xhci: fix even more unsafe memory usage in xhci tracing Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 24/26] xhci: fix " Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 25/26] x86/reboot: Limit Dell Optiplex 990 quirk to early BIOS versions Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.10 26/26] PCI: Call Max Payload Size-related fixup quirks early Greg Kroah-Hartman
2021-09-10 19:02 ` [PATCH 5.10 00/26] 5.10.64-rc1 review Florian Fainelli
2021-09-10 19:52 ` Pavel Machek
2021-09-10 22:51 ` Fox Chen
2021-09-10 23:17 ` Shuah Khan
2021-09-11 6:14 ` Samuel Zou
2021-09-11 15:56 ` Sudip Mukherjee
2021-09-11 19:37 ` Guenter Roeck
2021-09-12 0:49 ` Daniel Díaz
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