From: Marcel Holtmann <marcel@holtmann.org>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "Gustavo F. Padovan" <gustavo@padovan.org>,
Johan Hedberg <johan.hedberg@gmail.com>,
Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
Lauro Ramos Venancio <lauro.venancio@openbossa.org>,
Aloisio Almeida Jr <aloisio.almeida@openbossa.org>,
Samuel Ortiz <sameo@linux.intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Pavan Savoy <pavan_savoy@ti.com>, Arnd Bergmann <arnd@arndb.de>,
"open list:BLUETOOTH DRIVERS" <linux-bluetooth@vger.kernel.org>,
linux-media@vger.kernel.org,
linux-wireless <linux-wireless@vger.kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drivers: misc: ti-st: Use int instead of fuzzy char for callback status
Date: Wed, 13 Jul 2016 14:12:36 +0100 [thread overview]
Message-ID: <CE4AC59B-9138-4415-99AD-8C359ACFB5C7@holtmann.org> (raw)
In-Reply-To: <1465203723-16928-1-git-send-email-geert@linux-m68k.org>
Hi Geert,
> On mips and parisc:
>
> drivers/bluetooth/btwilink.c: In function 'ti_st_open':
> drivers/bluetooth/btwilink.c:174:21: warning: overflow in implicit constant conversion [-Woverflow]
> hst->reg_status = -EINPROGRESS;
>
> drivers/nfc/nfcwilink.c: In function 'nfcwilink_open':
> drivers/nfc/nfcwilink.c:396:31: warning: overflow in implicit constant conversion [-Woverflow]
> drv->st_register_cb_status = -EINPROGRESS;
>
> There are actually two issues:
> 1. Whether "char" is signed or unsigned depends on the architecture.
> As the completion callback data is used to pass a (negative) error
> code, it should always be signed.
> 2. EINPROGRESS is 150 on mips, 245 on parisc.
> Hence -EINPROGRESS doesn't fit in a signed 8-bit number.
>
> Change the callback status from "char" to "int" to fix these.
>
> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
> ---
> Compile-tested only.
> ---
> drivers/bluetooth/btwilink.c | 4 ++--
> drivers/media/radio/wl128x/fmdrv_common.c | 2 +-
> drivers/misc/ti-st/st_core.c | 2 +-
> drivers/nfc/nfcwilink.c | 4 ++--
> include/linux/ti_wilink_st.h | 2 +-
> 5 files changed, 7 insertions(+), 7 deletions(-)
patch has been applied to bluetooth-next tree.
Regards
Marcel
prev parent reply other threads:[~2016-07-13 13:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-06 9:02 [PATCH] drivers: misc: ti-st: Use int instead of fuzzy char for callback status Geert Uytterhoeven
2016-07-13 10:41 ` Mauro Carvalho Chehab
2016-07-13 10:56 ` Marcel Holtmann
2016-07-13 11:00 ` Samuel Ortiz
2016-07-13 13:12 ` Marcel Holtmann [this message]
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