From mboxrd@z Thu Jan 1 00:00:00 1970 From: stillcompiling@gmail.com (Joshua Clayton) Date: Tue, 17 Nov 2015 11:28:29 -0800 Subject: [PATCH 3/8] Documentation/spi/spidev_test.c: accept input from a file In-Reply-To: <564B716E.5020605@gmail.com> References: <564B716E.5020605@gmail.com> Message-ID: <5345438.ORMdKP6N7u@jclayton-pc> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tuesday, November 17, 2015 07:26:54 PM Anton Bondarenko wrote: > On 17.11.2015 16:24, Joshua Clayton wrote: > > + if (sb.st_size > 4096) > > + pabort("input file exceeds spidev's 4k limit"); > This is not a true. IIRC PAGE_SIZE is the default buffer size for > spidev, but can be changed using bufsiz module parameter. > Just 'insmod spidev bufsiz=X', where X is number of bytes. You are right. I will drop this. As Mark suggests. The ioctl gives a nice error code if the buffer is too big. ... > > + tx = malloc(sb.st_size); > It would be good to check new allocations for fail. I will add a check for this. -- ~Joshua Clayton