Re: [Outreachy kernel] [PATCH] Staging: irda: Don't use assignment inside if statement

On Sat, Sep 16, 2017 at 1:08 AM, Julia Lawall [off-list ref] wrote:

On Sat, 16 Sep 2017, Srishti Sharma wrote:

quoted

Write assignment statement outside the if statement. Done using
the following semantic patch by coccinelle.

@@
identifier E;
expression F;
statement S;
@@

-if((E = F))
+E = F

The line above would need to end in a ;

Yes, I'll send a v2 after correcting it .

This ends up with a lot of assignments with () around the right hand side.
Maybe you could make a series removing them afterwards.

Yes, I'll do that . Thanks .

Regards,
Srishti

julia

quoted

+if(E)
  S

Signed-off-by: Srishti Sharma <redacted>
---
 drivers/staging/irda/drivers/irda-usb.c | 4 ++--
 drivers/staging/irda/drivers/mcs7780.c  | 9 ++++++---
 drivers/staging/irda/net/irqueue.c      | 3 ++-
 3 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/irda/drivers/irda-usb.c b/drivers/staging/irda/drivers/irda-usb.c
index 723e49b..82bfc05 100644
--- a/drivers/staging/irda/drivers/irda-usb.c
+++ b/drivers/staging/irda/drivers/irda-usb.c

@@ -334,9 +334,9 @@ static void irda_usb_change_speed_xbofs(struct irda_usb_cb *self)
      urb->transfer_flags = 0;

      /* Irq disabled -> GFP_ATOMIC */
-     if ((ret = usb_submit_urb(urb, GFP_ATOMIC))) {
+     ret = usb_submit_urb(urb, GFP_ATOMIC);
+     if (ret)
              net_warn_ratelimited("%s(), failed Speed URB\n", __func__);
-     }
 }

 /*------------------------------------------------------------------*/

diff --git a/drivers/staging/irda/drivers/mcs7780.c b/drivers/staging/irda/drivers/mcs7780.c
index c3f0b25..2b674d5 100644
--- a/drivers/staging/irda/drivers/mcs7780.c
+++ b/drivers/staging/irda/drivers/mcs7780.c

@@ -605,19 +605,22 @@ static int mcs_speed_change(struct mcs_cb *mcs)
      if (mcs->new_speed <= 115200) {
              rval &= ~MCS_FIR;

-             if ((rst = (mcs->speed > 115200)))
+             rst = (mcs->speed > 115200);
+             if (rst)
                      mcs_set_reg(mcs, MCS_MINRXPW_REG, 0);

      } else if (mcs->new_speed <= 1152000) {
              rval &= ~MCS_FIR;

-             if ((rst = !(mcs->speed == 576000 || mcs->speed == 1152000)))
+             rst = !(mcs->speed == 576000 || mcs->speed == 1152000);
+             if (rst)
                      mcs_set_reg(mcs, MCS_MINRXPW_REG, 5);

      } else {
              rval |= MCS_FIR;

-             if ((rst = (mcs->speed != 4000000)))
+             rst = (mcs->speed != 4000000);
+             if (rst)
                      mcs_set_reg(mcs, MCS_MINRXPW_REG, 5);

      }

diff --git a/drivers/staging/irda/net/irqueue.c b/drivers/staging/irda/net/irqueue.c
index 160dc89..5aab072 100644
--- a/drivers/staging/irda/net/irqueue.c
+++ b/drivers/staging/irda/net/irqueue.c

@@ -217,7 +217,8 @@ static __u32 hash( const char* name)

      while(*name) {
              h = (h<<4) + *name++;
-             if ((g = (h & 0xf0000000)))
+             g = (h & 0xf0000000);
+             if (g)
                      h ^=g>>24;
              h &=~g;
      }
--

2.7.4

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