From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean Delvare Subject: Re: [PATCH] i2c-nomadik: fix regression on adapter name Date: Mon, 29 Nov 2010 10:45:33 +0100 Message-ID: <20101129104533.545b7953@endymion.delvare> References: <1291023335-6430-1-git-send-email-linus.walleij@stericsson.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1291023335-6430-1-git-send-email-linus.walleij-0IS4wlFg1OjSUeElwK9/Pw@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Linus Walleij Cc: Ben Dooks , linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-i2c@vger.kernel.org Hi Linus, On Mon, 29 Nov 2010 10:35:35 +0100, Linus Walleij wrote: > The Nomadik I2C adapter does not provide a name for the struct > passed into i2c_add_numbered_adapter() causing a regression on > 2.6.37-rc3 due to commit 2236baa75f704851d3cd3310569058151acb1f06 > adding sanity checks for adapters. Fix this by providing a name > proper. Thanks for the fix, but see below. > Cc: Jean Delvare > Signed-off-by: Linus Walleij > --- > drivers/i2c/busses/i2c-nomadik.c | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-) > > diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c > index c9fffd0..f34a276 100644 > --- a/drivers/i2c/busses/i2c-nomadik.c > +++ b/drivers/i2c/busses/i2c-nomadik.c > @@ -872,6 +872,7 @@ static int __devinit nmk_i2c_probe(struct platform_device *pdev) > adap->owner = THIS_MODULE; > adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD; > adap->algo = &nmk_i2c_algo; > + strncpy(adap->name, DRIVER_NAME, sizeof(adap->name)); Please use strlcpy. strncpy is broken by design (result isn't guaranteed to be NUL-terminated.) Also, DRIVER_NAME ("nmk-i2c") is not a good adapter name. It's cryptic and not unique if there is more than 1 such adapter on the system. I would instead suggest something like: snprintf(adap->name, sizeof(adap->name), "Nomadik I2C at %lx\n", (unsigned long)res->start); > > /* fetch the controller id */ > adap->nr = pdev->id; -- Jean Delvare