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Date: Fri, 12 Oct 2007 18:41:31 +0200 From: "Ahmed S. Darwish" <darwish.07@...il.com> To: Bryan Wu <bryan.wu@...log.com> Cc: dmitry.torokhov@...il.com, linux-input@...ey.karlin.mff.cuni.cz, linux-joystick@...ey.karlin.mff.cuni.cz, linux-kernel@...r.kernel.org, akpm@...ux-foundation.org Subject: Re: [PATCH try #2] Input/Joystick Driver: add support AD7142 joystick driver On Fri, Oct 12, 2007 at 03:38:47PM +0800, Bryan Wu wrote: > > Signed-off-by: Bryan Wu <bryan.wu@...log.com> > --- Hi Bryan, Why creating module's own kthread to call ad7142_decode and process keycodes instead of using a tasklet ? Isn't disabling device interrupts from the begining of the ISR "ad7142_interrupt" till the kthread "ad7142_thread" got waked-up and scheduled a long time, espicially if there's a high load on the userspace side ? Minor issues below. > + > +/* R ADC stage 0 - 11 result (uncompensated) actually located in SRAM */ > +#define ADCRESULT_S0 0x0B > +#define ADCRESULT_S1 0x0C > +#define ADCRESULT_S2 0x0D > +#define ADCRESULT_S3 0x0E > +#define ADCRESULT_S4 0x0F > +#define ADCRESULT_S5 0x10 > +#define ADCRESULT_S6 0x11 > +#define ADCRESULT_S7 0x12 > +#define ADCRESULT_S8 0x13 > +#define ADCRESULT_S9 0x14 > +#define ADCRESULT_S10 0x15 > +#define ADCRESULT_S11 0x16 > + Keeping last two lines aligned with their above counterparts ? > +static int > +ad7142_probe(struct i2c_adapter *adap, int addr, int kind) > +{ > + struct i2c_client *client; > + int rc; > + > + client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); > + if (!client) > + return -ENOMEM; > + memset(client, 0, sizeof(struct i2c_client)); kzalloc. Regards, -- Ahmed S. Darwish HomePage: http://darwish.07.googlepages.com Blog: http://darwish-07.blogspot.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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