linux-kernel - [PATCH v2 1/2] staging: fbtft: Constify buf parameter in fbtft_dbg

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Message-Id: <20220316165351.58107-1-andriy.shevchenko@linux.intel.com>
Date:   Wed, 16 Mar 2022 18:53:50 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, dri-devel@...ts.freedesktop.org,
        linux-fbdev@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Cc:     Helge Deller <deller@....de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v2 1/2] staging: fbtft: Constify buf parameter in fbtft_dbg_hex()

It's obvious that we don't and shouldn't modify buffer that
is about to be dumped. Constify parameter in fbtft_dbg_hex()
to make it clear.

Fixes: c296d5f9957c ("staging: fbtft: core support")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
v2: new patch to fix a warning (Greg)
 drivers/staging/fbtft/fbtft-core.c | 2 +-
 drivers/staging/fbtft/fbtft.h      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index f2684d2d6851..6dc77895a87c 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -49,7 +49,7 @@ int fbtft_write_buf_dc(struct fbtft_par *par, void *buf, size_t len, int dc)
 EXPORT_SYMBOL(fbtft_write_buf_dc);
 
 void fbtft_dbg_hex(const struct device *dev, int groupsize,
-		   void *buf, size_t len, const char *fmt, ...)
+		   const void *buf, size_t len, const char *fmt, ...)
 {
 	va_list args;
 	static char textbuf[512];
diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h
index 55677efc0138..c3d8b2aae607 100644
--- a/drivers/staging/fbtft/fbtft.h
+++ b/drivers/staging/fbtft/fbtft.h
@@ -240,7 +240,7 @@ struct fbtft_par {
 int fbtft_write_buf_dc(struct fbtft_par *par, void *buf, size_t len, int dc);
 __printf(5, 6)
 void fbtft_dbg_hex(const struct device *dev, int groupsize,
-		   void *buf, size_t len, const char *fmt, ...);
+		   const void *buf, size_t len, const char *fmt, ...);
 struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
 					struct device *dev,
 					struct fbtft_platform_data *pdata);
-- 
2.35.1