From: Greg Kroah-Hartman <gregkh@google.com>
To: balbi@kernel.org
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
"taehyun.cho" <taehyun.cho@samsung.com>,
Peter Chen <peter.chen@nxp.com>, stable <stable@vger.kernel.org>,
Will McVicker <willmcvicker@google.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 3/4] USB: gadget: f_fs: add SuperSpeed Plus support
Date: Thu, 26 Nov 2020 19:02:34 +0100 [thread overview]
Message-ID: <20201126180235.254523-3-gregkh@google.com> (raw)
In-Reply-To: <20201126180235.254523-1-gregkh@google.com>
From: "taehyun.cho" <taehyun.cho@samsung.com>
Setup the descriptors for SuperSpeed Plus for f_fs. This allows the
gadget to work properly without crashing at SuperSpeed rates.
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Peter Chen <peter.chen@nxp.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: taehyun.cho <taehyun.cho@samsung.com>
Signed-off-by: Will McVicker <willmcvicker@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/function/f_fs.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 046f770a76da..a34a7c96a1ab 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -1327,6 +1327,7 @@ static long ffs_epfile_ioctl(struct file *file, unsigned code,
struct usb_endpoint_descriptor *desc;
switch (epfile->ffs->gadget->speed) {
+ case USB_SPEED_SUPER_PLUS:
case USB_SPEED_SUPER:
desc_idx = 2;
break;
@@ -3222,6 +3223,10 @@ static int _ffs_func_bind(struct usb_configuration *c,
func->function.os_desc_n =
c->cdev->use_os_string ? ffs->interfaces_count : 0;
+ if (likely(super)) {
+ func->function.ssp_descriptors =
+ usb_copy_descriptors(func->function.ss_descriptors);
+ }
/* And we're done */
ffs_event_add(ffs, FUNCTIONFS_BIND);
return 0;
--
2.29.2
next prev parent reply other threads:[~2020-11-26 18:02 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-26 18:02 [PATCH 1/4] USB: gadget: f_rndis: fix bitrate for SuperSpeed and above Greg Kroah-Hartman
2020-11-26 18:02 ` [PATCH 2/4] USB: gadget: f_acm: add support for SuperSpeed Plus Greg Kroah-Hartman
2020-11-26 18:02 ` Greg Kroah-Hartman [this message]
2020-11-26 18:02 ` [PATCH 4/4] USB: gadget: f_midi: setup SuperSpeed Plus descriptors Greg Kroah-Hartman
2020-11-26 18:10 ` [PATCH 1/4] USB: gadget: f_rndis: fix bitrate for SuperSpeed and above Greg Kroah-Hartman
2020-11-26 18:09 Greg Kroah-Hartman
2020-11-26 18:09 ` [PATCH 3/4] USB: gadget: f_fs: add SuperSpeed Plus support Greg Kroah-Hartman
[not found] ` <20201127025517.GA22238@b29397-desktop>
2020-11-27 13:50 ` Greg Kroah-Hartman
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