From: David Laight <David.Laight@ACULAB.COM>
To: 'Mathias Nyman' <mathias.nyman@linux.intel.com>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
Cc: "linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: RE: [PATCH 08/19] xhci: dbc: Use sizeof_field() where it makes sense
Date: Fri, 1 Dec 2023 17:31:52 +0000 [thread overview]
Message-ID: <e98fd89faf4446e594ca3b7c3cc627fc@AcuMS.aculab.com> (raw)
In-Reply-To: <20231201150647.1307406-9-mathias.nyman@linux.intel.com>
From: Mathias Nyman
> Sent: 01 December 2023 15:07
>
> From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
>
> Instead of doing custom calculations, use sizeof_field() macro.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
> ---
> drivers/usb/host/xhci-dbgcap.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-dbgcap.c
> index 779a564ad698..0c9fd61e9c5b 100644
> --- a/drivers/usb/host/xhci-dbgcap.c
> +++ b/drivers/usb/host/xhci-dbgcap.c
> @@ -374,7 +374,7 @@ static void xhci_dbc_eps_init(struct xhci_dbc *dbc)
>
> static void xhci_dbc_eps_exit(struct xhci_dbc *dbc)
> {
> - memset(dbc->eps, 0, sizeof(struct dbc_ep) * ARRAY_SIZE(dbc->eps));
> + memset(dbc->eps, 0, sizeof_field(struct xhci_dbc, eps));
Isn't that just:
memset(dpc->eps, 0, sizeof (dpc->eps));
perhaps better written as:
memset(&dpc->epc, 0, sizeof (dpc->eps);
Otherwise the existing code wouldn't make sense at all.
David
> }
>
> static int dbc_erst_alloc(struct device *dev, struct xhci_ring *evt_ring,
> --
> 2.25.1
>
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
next prev parent reply other threads:[~2023-12-01 17:32 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-01 15:06 [PATCH 00/19] xhci features for usb-next Mathias Nyman
2023-12-01 15:06 ` [PATCH 01/19] xhci: dbc: Drop duplicate checks for dma_free_coherent() Mathias Nyman
2023-12-01 15:06 ` [PATCH 02/19] xhci: dbc: Convert to use sysfs_streq() Mathias Nyman
2023-12-01 15:06 ` [PATCH 03/19] xhci: dbc: Use sysfs_emit() to instead of scnprintf() Mathias Nyman
2023-12-01 15:06 ` [PATCH 04/19] xhci: dbc: Use ATTRIBUTE_GROUPS() Mathias Nyman
2023-12-01 15:06 ` [PATCH 05/19] xhci: dbc: Check for errors first in xhci_dbc_stop() Mathias Nyman
2023-12-01 15:06 ` [PATCH 06/19] xhci: dbc: Don't shadow error codes in store() functions Mathias Nyman
2023-12-01 15:06 ` [PATCH 07/19] xhci: dbc: Replace custom return value with proper Linux error code Mathias Nyman
2023-12-01 15:06 ` [PATCH 08/19] xhci: dbc: Use sizeof_field() where it makes sense Mathias Nyman
2023-12-01 17:31 ` David Laight [this message]
2023-12-01 19:08 ` Andy Shevchenko
2023-12-02 15:50 ` David Laight
2023-12-04 10:23 ` Mathias Nyman
2023-12-04 10:45 ` David Laight
2023-12-01 15:06 ` [PATCH 09/19] xhci: dbc: Use sizeof(*pointer) instead of sizeof(type) Mathias Nyman
2023-12-01 15:06 ` [PATCH 10/19] xhci: dbc: Add missing headers Mathias Nyman
2023-12-01 15:06 ` [PATCH 11/19] xhci: check if legacy irq is available before using it as fallback Mathias Nyman
2023-12-01 15:06 ` [PATCH 12/19] xhci: add handler for only one interrupt line Mathias Nyman
2023-12-01 15:06 ` [PATCH 13/19] xhci: refactor static MSI-X function Mathias Nyman
2023-12-01 15:06 ` [PATCH 14/19] xhci: refactor static MSI function Mathias Nyman
2023-12-01 15:06 ` [PATCH 15/19] xhci: change 'msix_count' to encompass MSI or MSI-X vectors Mathias Nyman
2023-12-01 15:06 ` [PATCH 16/19] xhci: rework 'xhci_try_enable_msi()' MSI and MSI-X setup code Mathias Nyman
2023-12-01 15:06 ` [PATCH 17/19] xhci: minor coding style cleanup in 'xhci_try_enable_msi()' Mathias Nyman
2023-12-01 15:06 ` [PATCH 18/19] xhci: Reconfigure endpoint 0 max packet size only during endpoint reset Mathias Nyman
2023-12-01 15:06 ` [PATCH 19/19] xhci: fix possible null pointer deref during xhci urb enqueue Mathias Nyman
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=e98fd89faf4446e594ca3b7c3cc627fc@AcuMS.aculab.com \
--to=david.laight@aculab.com \
--cc=andriy.shevchenko@linux.intel.com \
--cc=gregkh@linuxfoundation.org \
--cc=linux-usb@vger.kernel.org \
--cc=mathias.nyman@linux.intel.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.