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Message-ID: <223bc330-5be1-136b-7b42-e4bc1331d28f@gmail.com>
Date: Thu, 2 Dec 2021 10:42:51 +0100
From: Heiner Kallweit <hkallweit1@...il.com>
To: Peter Tyser <ptyser@...-inc.com>, Lee Jones <lee.jones@...aro.org>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH] mfd: lpc_ich: convert name to const char*
This change reduces the memory footprint of the structs (admittedly
not much), and it allows the compiler to store names only once.
E.g. i2c-i801 uses name "Intel PCH" twice. All users assign static
strings to name, and only usage of name is in iTCO_wdt_probe() for
printing a syslog info message. So we don't really have to worry
about potential issues like use after free.
Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
drivers/mfd/lpc_ich.c | 2 +-
include/linux/mfd/lpc_ich.h | 2 +-
include/linux/platform_data/itco_wdt.h | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/mfd/lpc_ich.c b/drivers/mfd/lpc_ich.c
index f10e53187..acb33a180 100644
--- a/drivers/mfd/lpc_ich.c
+++ b/drivers/mfd/lpc_ich.c
@@ -889,7 +889,7 @@ static int lpc_ich_finalize_wdt_cell(struct pci_dev *dev)
info = &lpc_chipset_info[priv->chipset];
pdata->version = info->iTCO_version;
- strlcpy(pdata->name, info->name, sizeof(pdata->name));
+ pdata->name = info->name;
cell->platform_data = pdata;
cell->pdata_size = sizeof(*pdata);
diff --git a/include/linux/mfd/lpc_ich.h b/include/linux/mfd/lpc_ich.h
index 39967a5ec..6dec7d992 100644
--- a/include/linux/mfd/lpc_ich.h
+++ b/include/linux/mfd/lpc_ich.h
@@ -27,7 +27,7 @@ enum {
};
struct lpc_ich_info {
- char name[32];
+ const char *name;
unsigned int iTCO_version;
unsigned int gpio_version;
enum intel_spi_type spi_type;
diff --git a/include/linux/platform_data/itco_wdt.h b/include/linux/platform_data/itco_wdt.h
index 45d860cac..c6941c089 100644
--- a/include/linux/platform_data/itco_wdt.h
+++ b/include/linux/platform_data/itco_wdt.h
@@ -19,7 +19,7 @@
* @no_reboot_use_pmc: Use PMC BXT API to set and clear NO_REBOOT bit
*/
struct itco_wdt_platform_data {
- char name[32];
+ const char *name;
unsigned int version;
bool no_reboot_use_pmc;
};
--
2.34.1
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