From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liam Breck Subject: [PATCH v12.7 09/10] power: bq27xxx_battery: Flag identical register maps when in debug mode Date: Fri, 21 Apr 2017 02:59:58 -0700 Message-ID: <20170421095959.14151-7-liam@networkimprov.net> References: <20170421095959.14151-1-liam@networkimprov.net> Return-path: Received: from mail-io0-f194.google.com ([209.85.223.194]:35842 "EHLO mail-io0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1037553AbdDUKAY (ORCPT ); Fri, 21 Apr 2017 06:00:24 -0400 Received: by mail-io0-f194.google.com with SMTP id x86so28496002ioe.3 for ; Fri, 21 Apr 2017 03:00:23 -0700 (PDT) In-Reply-To: <20170421095959.14151-1-liam@networkimprov.net> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: "Andrew F. Davis" , linux-pm@vger.kernel.org Cc: Liam Breck From: Liam Breck We tie multiple chips to unique register maps. When supporting a new chip, it's easy to add a duplicate map by mistake. In debug mode we now scan the register maps for duplicates. Signed-off-by: Liam Breck --- drivers/power/supply/bq27xxx_battery.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c index 4497bc0..ae4a759 100644 --- a/drivers/power/supply/bq27xxx_battery.c +++ b/drivers/power/supply/bq27xxx_battery.c @@ -1932,6 +1932,25 @@ static void bq27xxx_external_power_changed(struct power_supply *psy) schedule_delayed_work(&di->work, 0); } +#ifdef DEBUG +static void bq27xxx_battery_dbg_regs_dupes(struct bq27xxx_device_info *di) +{ + const size_t max = ARRAY_SIZE(bq27xxx_regs); + int a, b; + + for (a = 1; a < max-1; a++) { + for (b = a+1; b < max; b++) { + if (!memcmp(bq27xxx_regs[a], bq27xxx_regs[b], + sizeof(bq27xxx_regs[0]))) + dev_warn(di->dev, + "bq27xxx_regs[%d] & [%d] are identical\n", a, b); + } + } +} +#else +static inline void bq27xxx_battery_dbg_regs_dupes(struct bq27xxx_device_info *di) {} +#endif + int bq27xxx_battery_setup(struct bq27xxx_device_info *di) { struct power_supply_desc *psy_desc; @@ -1940,6 +1959,8 @@ int bq27xxx_battery_setup(struct bq27xxx_device_info *di) .drv_data = di, }; + bq27xxx_battery_dbg_regs_dupes(di); + di->ram_chip = di->chip == BQ27421 || di->chip == BQ27441 || di->chip == BQ27621; di->unseal_key = bq27xxx_unseal_keys[di->chip]; -- 2.9.3