Messages in this thread | | | From | "Maarten Brock" <> | Subject | Re: [PATCH] serial-uartlite: fix build warning | Date | Fri, 18 Mar 2016 18:48:56 +0100 |
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----- Original Message ----- From: Geert Uytterhoeven [mailto:geert@linux-m68k.org] To: Sudip Mukherjee [mailto:sudipm.mukherjee@gmail.com] Cc: Peter Korsgaard [mailto:jacmet@sunsite.dk], Greg Kroah-Hartman [mailto:gregkh@linuxfoundation.org], Jiri Slaby [mailto:jslaby@suse.com], linux-kernel@vger.kernel.org [mailto:linux-kernel@vger.kernel.org], linux-serial@vger.kernel.org [mailto:linux-serial@vger.kernel.org] Sent: Fri, 18 Mar 2016 13:48:06 +0100 Subject: Re: [PATCH] serial-uartlite: fix build warning
> On Thu, Mar 10, 2016 at 2:14 PM, Sudip Mukherjee > <sudipm.mukherjee@gmail.com> wrote: > > We were getting build warnings about: > > drivers/tty/serial/uartlite.c: In function ‘ulite_request_port’: > > drivers/tty/serial/uartlite.c:348:21: warning: assignment discards > > 'const' qualifier from pointer target type > > port->private_data = &uartlite_be; > > ^ > > drivers/tty/serial/uartlite.c:354:22: warning: assignment discards > > 'const' qualifier from pointer target type > > port->private_data = &uartlite_le; > > ^ > > > > Fixes: 2905697a82ea ("serial-uartlite: Constify uartlite_be/uartlite_le") > > Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> > > Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> > > Gr{oetje,eeting}s, > > Geert
Reverting is not the same as fixing.
Rant: It is a stupid warning IMHO, but being a compiler writer myself (SDCC) I understand how it can arise. If you assign some const pointer to a void pointer without an explicit cast gcc does not complain about the complete loss of type, but it does warn about losing constness. In general I'd say: make up your mind; either warn about both or don't warn about either.
Maarten
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