On Mon, 2011-01-24 at 11:44 +0100, Wolfram Sang wrote: > A few new i2c-drivers came into the kernel which clear the clientdata-pointer > on exit or error. This is obsolete meanwhile, the core will do it. Simplify > the > kfree() calls after that, the pointers don't need to be checked. > > Signed-off-by: Wolfram Sang <[email protected]> > Cc: Greg Kroah-Hartman <[email protected]> > Cc: Mauro Carvalho Chehab <[email protected]> > Cc: Andy Walls <[email protected]>
Nak. In a module where I plan to do more cleanup and add reference counting to struct IR, IR_tx, and IR_rx objects, I'd like the explicit "NULL"s in pointer checks to stay in for now. Removing the explicit constant "NULL" makes searching for checks against NULL pointers more difficult when auditing the code (No red syntax highlighting and a /NULL search misses). Regards, Andy > Cc: Jarod Wilson <[email protected]> > Cc: Joe Perches <[email protected]> > --- > > Compile tested only. > > drivers/staging/lirc/lirc_zilog.c | 28 +++++++++------------------- > 1 files changed, 9 insertions(+), 19 deletions(-) > > diff --git a/drivers/staging/lirc/lirc_zilog.c > b/drivers/staging/lirc/lirc_zilog.c > index 3fe5f41..df1055f 100644 > --- a/drivers/staging/lirc/lirc_zilog.c > +++ b/drivers/staging/lirc/lirc_zilog.c > @@ -1214,15 +1214,12 @@ static int ir_remove(struct i2c_client *client) > > /* Good-bye Rx */ > destroy_rx_kthread(ir->rx); > - if (ir->rx != NULL) { > - if (ir->rx->buf.fifo_initialized) > - lirc_buffer_free(&ir->rx->buf); > - i2c_set_clientdata(ir->rx->c, NULL); > - kfree(ir->rx); > - } > + if (ir->rx && ir->rx->buf.fifo_initialized) > + lirc_buffer_free(&ir->rx->buf); > + > + kfree(ir->rx); > > /* Good-bye Tx */ > - i2c_set_clientdata(ir->tx->c, NULL); > kfree(ir->tx); > > /* Good-bye IR */ > @@ -1388,18 +1385,11 @@ out_unregister: > out_free_thread: > destroy_rx_kthread(ir->rx); > out_free_xx: > - if (ir->rx != NULL) { > - if (ir->rx->buf.fifo_initialized) > - lirc_buffer_free(&ir->rx->buf); > - if (ir->rx->c != NULL) > - i2c_set_clientdata(ir->rx->c, NULL); > - kfree(ir->rx); > - } > - if (ir->tx != NULL) { > - if (ir->tx->c != NULL) > - i2c_set_clientdata(ir->tx->c, NULL); > - kfree(ir->tx); > - } > + if (ir->rx && ir->rx->buf.fifo_initialized) > + lirc_buffer_free(&ir->rx->buf); > + > + kfree(ir->rx); > + kfree(ir->tx); > out_free_ir: > del_ir_device(ir); > kfree(ir); _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
