Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752108AbdCBLPB (ORCPT ); Thu, 2 Mar 2017 06:15:01 -0500 Received: from mail2-relais-roc.national.inria.fr ([192.134.164.83]:44990 "EHLO mail2-relais-roc.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750915AbdCBLOw (ORCPT ); Thu, 2 Mar 2017 06:14:52 -0500 X-IronPort-AV: E=Sophos;i="5.35,230,1484002800"; d="scan'208";a="262802911" Date: Thu, 2 Mar 2017 12:14:40 +0100 (CET) From: Julia Lawall X-X-Sender: jll@hadrien To: SIMRAN SINGHAL cc: Julia Lawall , Greg KH , devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, sergio.paracuellos@gmail.com, Juliana Rodrigues , thomas.petazzoni@free-electrons.com, noralf@tronnes.org, outreachy-kernel@googlegroups.com Subject: Re: [Outreachy kernel] [PATCH 1/6] staging: wlan-ng: Fix sparse warning of restricted __le16 In-Reply-To: Message-ID: References: <1488448146-29452-1-git-send-email-singhalsimran0@gmail.com> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8391 Lines: 167 On Thu, 2 Mar 2017, SIMRAN SINGHAL wrote: > On Thu, Mar 2, 2017 at 3:20 PM, Julia Lawall wrote: > > > > > > On Thu, 2 Mar 2017, Julia Lawall wrote: > > > >> > >> > >> On Thu, 2 Mar 2017, simran singhal wrote: > >> > >> > This patch fixes the following sparse warning: > >> > warning: cast to restricted __le16 > >> > >> You commit message should not say just fix X. What have you done to carry > >> out the fix and why is this the correct approach? > > > > This comment applies to all of the patches in the series. > > > > julia > > > The changes and sparse warnings for them seems reasonable to me as > after doing the > change sparse was not showing error like cast to __le16 or something like this. > Also it compiled perfectly. This doesn't mean that it actually works. The function calls at least may have been put there for a reason. Maysbe you can find other patches that relate to this call and see what they do. julia > >> > >> julia > >> > >> > > >> > Signed-off-by: simran singhal > >> > --- > >> > drivers/staging/wlan-ng/prism2sta.c | 51 ++++++++++++++++++------------------- > >> > 1 file changed, 25 insertions(+), 26 deletions(-) > >> > > >> > diff --git a/drivers/staging/wlan-ng/prism2sta.c b/drivers/staging/wlan-ng/prism2sta.c > >> > index 984804b..82d3a70 100644 > >> > --- a/drivers/staging/wlan-ng/prism2sta.c > >> > +++ b/drivers/staging/wlan-ng/prism2sta.c > >> > @@ -372,10 +372,9 @@ static int prism2sta_mlmerequest(struct wlandevice *wlandev, > >> > qualmsg->noise.status = > >> > P80211ENUM_msgitem_status_data_ok; > >> > > >> > - qualmsg->link.data = le16_to_cpu(hw->qual.cq_curr_bss); > >> > - qualmsg->level.data = > >> > - le16_to_cpu(hw->qual.asl_curr_bss); > >> > - qualmsg->noise.data = le16_to_cpu(hw->qual.anl_curr_fc); > >> > + qualmsg->link.data = hw->qual.cq_curr_bss; > >> > + qualmsg->level.data = hw->qual.asl_curr_bss; > >> > + qualmsg->noise.data = hw->qual.anl_curr_fc; > >> > qualmsg->txrate.data = hw->txrate; > >> > > >> > break; > >> > @@ -603,10 +602,10 @@ static int prism2sta_getcardinfo(struct wlandevice *wlandev) > >> > } > >> > > >> > /* get all the nic id fields in host byte order */ > >> > - hw->ident_nic.id = le16_to_cpu(hw->ident_nic.id); > >> > - hw->ident_nic.variant = le16_to_cpu(hw->ident_nic.variant); > >> > - hw->ident_nic.major = le16_to_cpu(hw->ident_nic.major); > >> > - hw->ident_nic.minor = le16_to_cpu(hw->ident_nic.minor); > >> > + hw->ident_nic.id = hw->ident_nic.id; > >> > + hw->ident_nic.variant = hw->ident_nic.variant; > >> > + hw->ident_nic.major = hw->ident_nic.major; > >> > + hw->ident_nic.minor = hw->ident_nic.minor; > >> > > >> > netdev_info(wlandev->netdev, "ident: nic h/w: id=0x%02x %d.%d.%d\n", > >> > hw->ident_nic.id, hw->ident_nic.major, > >> > @@ -622,10 +621,10 @@ static int prism2sta_getcardinfo(struct wlandevice *wlandev) > >> > } > >> > > >> > /* get all the private fw id fields in host byte order */ > >> > - hw->ident_pri_fw.id = le16_to_cpu(hw->ident_pri_fw.id); > >> > - hw->ident_pri_fw.variant = le16_to_cpu(hw->ident_pri_fw.variant); > >> > - hw->ident_pri_fw.major = le16_to_cpu(hw->ident_pri_fw.major); > >> > - hw->ident_pri_fw.minor = le16_to_cpu(hw->ident_pri_fw.minor); > >> > + hw->ident_pri_fw.id = hw->ident_pri_fw.id; > >> > + hw->ident_pri_fw.variant = hw->ident_pri_fw.variant; > >> > + hw->ident_pri_fw.major = hw->ident_pri_fw.major; > >> > + hw->ident_pri_fw.minor = hw->ident_pri_fw.minor; > >> > > >> > netdev_info(wlandev->netdev, "ident: pri f/w: id=0x%02x %d.%d.%d\n", > >> > hw->ident_pri_fw.id, hw->ident_pri_fw.major, > >> > @@ -648,10 +647,10 @@ static int prism2sta_getcardinfo(struct wlandevice *wlandev) > >> > } > >> > > >> > /* get all the station fw id fields in host byte order */ > >> > - hw->ident_sta_fw.id = le16_to_cpu(hw->ident_sta_fw.id); > >> > - hw->ident_sta_fw.variant = le16_to_cpu(hw->ident_sta_fw.variant); > >> > - hw->ident_sta_fw.major = le16_to_cpu(hw->ident_sta_fw.major); > >> > - hw->ident_sta_fw.minor = le16_to_cpu(hw->ident_sta_fw.minor); > >> > + hw->ident_sta_fw.id = hw->ident_sta_fw.id; > >> > + hw->ident_sta_fw.variant = hw->ident_sta_fw.variant; > >> > + hw->ident_sta_fw.major = hw->ident_sta_fw.major; > >> > + hw->ident_sta_fw.minor = hw->ident_sta_fw.minor; > >> > > >> > /* strip out the 'special' variant bits */ > >> > hw->mm_mods = hw->ident_sta_fw.variant & GENMASK(15, 14); > >> > @@ -683,11 +682,11 @@ static int prism2sta_getcardinfo(struct wlandevice *wlandev) > >> > /* get all the Compatibility range, modem interface supplier > >> > * fields in byte order > >> > */ > >> > - hw->cap_sup_mfi.role = le16_to_cpu(hw->cap_sup_mfi.role); > >> > - hw->cap_sup_mfi.id = le16_to_cpu(hw->cap_sup_mfi.id); > >> > - hw->cap_sup_mfi.variant = le16_to_cpu(hw->cap_sup_mfi.variant); > >> > - hw->cap_sup_mfi.bottom = le16_to_cpu(hw->cap_sup_mfi.bottom); > >> > - hw->cap_sup_mfi.top = le16_to_cpu(hw->cap_sup_mfi.top); > >> > + hw->cap_sup_mfi.role = hw->cap_sup_mfi.role; > >> > + hw->cap_sup_mfi.id = hw->cap_sup_mfi.id; > >> > + hw->cap_sup_mfi.variant = hw->cap_sup_mfi.variant; > >> > + hw->cap_sup_mfi.bottom = hw->cap_sup_mfi.bottom; > >> > + hw->cap_sup_mfi.top = hw->cap_sup_mfi.top; > >> > > >> > netdev_info(wlandev->netdev, > >> > "MFI:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n", > >> > @@ -707,11 +706,11 @@ static int prism2sta_getcardinfo(struct wlandevice *wlandev) > >> > /* get all the Compatibility range, controller interface supplier > >> > * fields in byte order > >> > */ > >> > - hw->cap_sup_cfi.role = le16_to_cpu(hw->cap_sup_cfi.role); > >> > - hw->cap_sup_cfi.id = le16_to_cpu(hw->cap_sup_cfi.id); > >> > - hw->cap_sup_cfi.variant = le16_to_cpu(hw->cap_sup_cfi.variant); > >> > - hw->cap_sup_cfi.bottom = le16_to_cpu(hw->cap_sup_cfi.bottom); > >> > - hw->cap_sup_cfi.top = le16_to_cpu(hw->cap_sup_cfi.top); > >> > + hw->cap_sup_cfi.role = hw->cap_sup_cfi.role; > >> > + hw->cap_sup_cfi.id = hw->cap_sup_cfi.id; > >> > + hw->cap_sup_cfi.variant = hw->cap_sup_cfi.variant; > >> > + hw->cap_sup_cfi.bottom = hw->cap_sup_cfi.bottom; > >> > + hw->cap_sup_cfi.top = hw->cap_sup_cfi.top; > >> > > >> > netdev_info(wlandev->netdev, > >> > "CFI:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n", > >> > -- > >> > 2.7.4 > >> > > >> > -- > >> > You received this message because you are subscribed to the Google Groups "outreachy-kernel" group. > >> > To unsubscribe from this group and stop receiving emails from it, send an email to outreachy-kernel+unsubscribe@googlegroups.com. > >> > To post to this group, send email to outreachy-kernel@googlegroups.com. > >> > To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/1488448146-29452-1-git-send-email-singhalsimran0%40gmail.com. > >> > For more options, visit https://groups.google.com/d/optout. > >> > > >> > >> -- > >> You received this message because you are subscribed to the Google Groups "outreachy-kernel" group. > >> To unsubscribe from this group and stop receiving emails from it, send an email to outreachy-kernel+unsubscribe@googlegroups.com. > >> To post to this group, send email to outreachy-kernel@googlegroups.com. > >> To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/alpine.DEB.2.20.1703021047350.3414%40hadrien. > >> For more options, visit https://groups.google.com/d/optout. > >> > > -- > You received this message because you are subscribed to the Google Groups "outreachy-kernel" group. > To unsubscribe from this group and stop receiving emails from it, send an email to outreachy-kernel+unsubscribe@googlegroups.com. > To post to this group, send email to outreachy-kernel@googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/CALrZqyNGZcP8c9oeS65r-PRTPpwcn664iB2WvWdx3ccD5KRRLg%40mail.gmail.com. > For more options, visit https://groups.google.com/d/optout. >