[PATCH v7 1/3] PNP: Add dev_is_pnp() macro

[Guanbing Huang]

From: Guanbing Huang <albanhuang@xxxxxxxxxxx>

Add dev_is_pnp() macro to determine whether the device is a PNP device.

Signed-off-by: Guanbing Huang <albanhuang@xxxxxxxxxxx>
Suggested-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Reviewed-by: Bing Fan <tombinfan@xxxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202404100523.b06UvPSB-lkp@xxxxxxxxx/
Tested-by: Linheng Du <dylanlhdu@xxxxxxxxxxx>
---
v6 -> v7: add a "Reviewed-by" tag and a "Reported-by" tag, fix build errors when CONFIG_PNP is not enabled
v5 -> v6: fix the issue that the cover letter is not chained with the patch series
v4 -> v5: change "pnp" in the commit message to uppercase

 include/linux/pnp.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index ddbe7c3ca4ce..82561242cda4 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -469,6 +469,8 @@ int compare_pnp_id(struct pnp_id *pos, const char *id);
 int pnp_register_driver(struct pnp_driver *drv);
 void pnp_unregister_driver(struct pnp_driver *drv);
 
+#define dev_is_pnp(d) ((d)->bus == &pnp_bus_type)
+
 #else
 
 /* device management */
@@ -500,6 +502,8 @@ static inline int compare_pnp_id(struct pnp_id *pos, const char *id) { return -E
 static inline int pnp_register_driver(struct pnp_driver *drv) { return -ENODEV; }
 static inline void pnp_unregister_driver(struct pnp_driver *drv) { }
 
+#define dev_is_pnp(d) false
+
 #endif /* CONFIG_PNP */
 
 /**
-- 
2.17.1