RE: [PATCH] i2c: dev: prevent adapter retries being set as minus value

2019-01-07 Thread Zeng Yi(曾毅)
) Cc: linux-...@vger.kernel.org; linux-kernel@vger.kernel.org Subject: Re: [PATCH] i2c: dev: prevent adapter retries being set as minus value Hi Yi Zeng, On Fri, Dec 21, 2018 at 05:32:06PM +0800, Yi Zeng wrote: > If set adapter->retries to minus value from user space via ioctl, will

Re: [PATCH] i2c: dev: prevent adapter retries being set as minus value

2019-01-03 Thread Wolfram Sang
Hi Yi Zeng, On Fri, Dec 21, 2018 at 05:32:06PM +0800, Yi Zeng wrote: > If set adapter->retries to minus value from user space via ioctl, > will make __i2c_transfer and __i2c_smbus_xfer jump the calling to > adapter->algo->master_xfer and adapter->algo->smbus_xfer that > registered by the underlyin

[PATCH] i2c: dev: prevent adapter retries being set as minus value

2018-12-21 Thread Yi Zeng
If set adapter->retries to minus value from user space via ioctl, will make __i2c_transfer and __i2c_smbus_xfer jump the calling to adapter->algo->master_xfer and adapter->algo->smbus_xfer that registered by the underlying bus drivers, and return value 0 to all the callers. The bus driver will neve