Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1614539

Re: [PATCH 1/3] usb: pci-quirks: Add a header for SB800 I/O ports and mutex for locking

Show all headers | View raw

On Sat, 1 Apr 2017, Greg KH wrote:

> On Sat, Apr 01, 2017 at 01:02:21PM +0200, Zoltan Boszormenyi wrote:
> > From: B�sz�rm�nyi Zolt�n <zboszor@pr.hu>
> > 
> > This patch adds:
> > * a mutex in the USB PCI quirks code for synchronizing access to
> >   the I/O ports on SB800
> > * a new header that contains symbols for the index and data I/O ports
> >   and wrappers for locking and unlocking the mutex.
> > * locking around the I/O port access for SB800
> > 
> > Signed-off-by: Zoltan Boszormenyi <zboszor@pr.hu>
> > ---

> > diff --git a/include/linux/sb800.h b/include/linux/sb800.h
> > new file mode 100644
> > index 0000000..5650b7d
> > --- /dev/null
> > +++ b/include/linux/sb800.h
> > @@ -0,0 +1,15 @@
> > +
> > +#ifndef SB800_H
> > +#define SB800_H
> > +
> > +#include <linux/mutex.h>
> > +
> > +#define SB800_PIIX4_SMB_IDX		0xcd6
> > +#define SB800_PIIX4_SMB_DATA	0xcd7
> > +
> > +extern struct mutex sb800_mutex;
> > +
> > +#define enter_sb800()	mutex_lock(&sb800_mutex)
> > +#define leave_sb800()	mutex_unlock(&sb800_mutex)

Is include/linux/ the best place for this new header file?  Aren't 
there other locations more suitable for something that's 
board-specific?

Alan Stern

> Don't hide the mutex, just spell it out in the code itself.  No need for
> these defines at all.
> 
> thanks,
> 
> greg k-h

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH 0/3] Fix sp5100_tco watchdog driver regression Zoltán Böszörményi          <zboszor@pr.hu> - 2017-04-01 12:10 +0200
  [PATCH 1/3] usb: pci-quirks: Add a header for SB800 I/O ports and mutex for locking Zoltán Böszörményi          <zboszor@pr.hu> - 2017-04-01 12:10 +0200
  [PATCH 3/3] watchdog: sp5100_tco: Synchronize I/O port accesses Zoltan Boszormenyi <zboszor@pr.hu> - 2017-04-01 13:10 +0200
  [PATCH 1/3] usb: pci-quirks: Add a header for SB800 I/O ports and mutex for locking Zoltan Boszormenyi <zboszor@pr.hu> - 2017-04-01 13:10 +0200
    Re: [PATCH 1/3] usb: pci-quirks: Add a header for SB800 I/O ports  and mutex for locking Greg KH <greg@kroah.com> - 2017-04-01 16:20 +0200
      Re: [PATCH 1/3] usb: pci-quirks: Add a header for SB800 I/O ports  and mutex for locking Alan Stern <stern@rowland.harvard.edu> - 2017-04-01 16:50 +0200
        Re: [PATCH 1/3] usb: pci-quirks: Add a header for SB800 I/O ports and  mutex for locking Boszormenyi Zoltan <zboszor@pr.hu> - 2017-04-01 17:20 +0200
      Re: [PATCH 1/3] usb: pci-quirks: Add a header for SB800 I/O ports and  mutex for locking Boszormenyi Zoltan <zboszor@pr.hu> - 2017-04-01 17:10 +0200
  [PATCH 0/3, resend] Fix sp5100_tco watchdog driver regression Zoltan Boszormenyi <zboszor@pr.hu> - 2017-04-01 13:10 +0200
  [PATCH 2/3] i2c: i2c-piix4: Synchronize I/O port accesses with the SB800 USB quirk Zoltan Boszormenyi <zboszor@pr.hu> - 2017-04-01 13:10 +0200

csiph-web