From patchwork Fri Nov 8 23:24:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13869036 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2CCC919922F for ; Fri, 8 Nov 2024 23:24:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731108292; cv=none; b=jYYLO6xH0Lz97OENbvxkv1ASnU3+Uqmly2wgIYy4oKBaqBtZEXP0Y/bORKrHXLCw5HunDxb0NBBj8+eZ2SyPJKXeRRUjPp5tRpNyGhdfdbX6EUDS7NRh1Z5gBpdokEjBz1cv14hR+3cVz5EfJNubLKsl1Q45juAuzstLPjivp/Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731108292; c=relaxed/simple; bh=30ZIInXdRPvV1IKtef0Hy5it7Jdn3Ym8Z0lNegtnHU4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oDK6D3FTq8WvFJqaTEwM18/bAGutbH1f2/81ELU0chqe4yPU8LREf/cgi2UpfRWnh9KXSLEwNDii3jiygQWsIWhZmMHwrqtX+sqv5bPryyJm3Hn2Smmb3yITRRW3MCilpwEWtxnInuM4c59TrIBdCrTr//A5iH1eWaj5J47Rx14= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=M4M05R2V; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="M4M05R2V" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1731108289; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QsHudR/O0OQO/evU/fqpi+WL13BjaFfp+AYt9apmj3s=; b=M4M05R2VPZHqkxuUouu1xlk1X/iJn6x0IfJn5xfWN0LR2NAZpoqwi+bb0o4FmrMdXOyHHH BmrvegpGujEQdnlABGZ2f9Vzj7rpaihtioa7KgR6fytL+tvTQaWNFATvHh5mCkbUZk9rAe 5DZ0Q2eslnscqB99NnUYmaxAThzwm/U= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-147-4_-vXEryPP2zGl--cUUnkA-1; Fri, 08 Nov 2024 18:24:47 -0500 X-MC-Unique: 4_-vXEryPP2zGl--cUUnkA-1 X-Mimecast-MFC-AGG-ID: 4_-vXEryPP2zGl--cUUnkA Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 09B0C19560A3; Fri, 8 Nov 2024 23:24:46 +0000 (UTC) Received: from shalem.redhat.com (unknown [10.39.192.67]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 1A2A8300019F; Fri, 8 Nov 2024 23:24:42 +0000 (UTC) From: Hans de Goede To: =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Andy Shevchenko , Sebastian Reichel Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Jelle van der Waa , linux-pm@vger.kernel.org Subject: [PATCH v2 1/4] power: supply: power_supply_show_enum_with_available(): Replace spaces with '_' Date: Sat, 9 Nov 2024 00:24:35 +0100 Message-ID: <20241108232438.269156-2-hdegoede@redhat.com> In-Reply-To: <20241108232438.269156-1-hdegoede@redhat.com> References: <20241108232438.269156-1-hdegoede@redhat.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Some enum style power-supply properties have text-values / labels for some of the enum values containing a space, e.g. "Long Life" for POWER_SUPPLY_CHARGE_TYPE_LONGLIFE. Make power_supply_show_enum_with_available() replace these spaces with '_' when showing the available text-values. After this the output for a battery which supports "Long Life" will be e.g.: Fast [Standard] Long_Life or: Fast Standard [Long_Life] Modify power_supply_store_property() to accept both the original text-value with space and the alternative value with the spaces replaced by '_'. This allows users to write the value with '_' after seeing this on reading the property. Signed-off-by: Hans de Goede --- Changes in v2 - Replace spaces with '_' instead of surrounding the text-value by "" --- drivers/power/supply/power_supply_sysfs.c | 37 ++++++++++++++++++++--- 1 file changed, 33 insertions(+), 4 deletions(-) diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c index 16b3c5880cd8..6f128c6fa62f 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -237,23 +237,52 @@ static enum power_supply_property dev_attr_psp(struct device_attribute *attr) return to_ps_attr(attr) - power_supply_attrs; } +static void power_supply_escape_spaces(const char *str, char *buf, size_t bufsize) +{ + strscpy(buf, str, bufsize); + strreplace(buf, ' ', '_'); +} + +static int power_supply_match_string(const char * const *array, size_t n, const char *s) +{ + int ret; + + /* First try an exact match */ + ret = __sysfs_match_string(array, n, s); + if (ret >= 0) + return ret; + + /* Second round, try matching with spaces replaced by '_' */ + for (size_t i = 0; i < n; i++) { + char buf[32]; + + power_supply_escape_spaces(array[i], buf, sizeof(buf)); + if (sysfs_streq(buf, s)) + return i; + } + + return -EINVAL; +} + static ssize_t power_supply_show_enum_with_available( struct device *dev, const char * const labels[], int label_count, unsigned int available_values, int value, char *buf) { bool match = false, available, active; + char escaped_label[32]; ssize_t count = 0; int i; for (i = 0; i < label_count; i++) { available = available_values & BIT(i); active = i == value; + power_supply_escape_spaces(labels[i], escaped_label, sizeof(escaped_label)); if (available && active) { - count += sysfs_emit_at(buf, count, "[%s] ", labels[i]); + count += sysfs_emit_at(buf, count, "[%s] ", escaped_label); match = true; } else if (available) { - count += sysfs_emit_at(buf, count, "%s ", labels[i]); + count += sysfs_emit_at(buf, count, "%s ", escaped_label); } } @@ -332,8 +361,8 @@ static ssize_t power_supply_store_property(struct device *dev, ret = -EINVAL; if (ps_attr->text_values_len > 0) { - ret = __sysfs_match_string(ps_attr->text_values, - ps_attr->text_values_len, buf); + ret = power_supply_match_string(ps_attr->text_values, + ps_attr->text_values_len, buf); } /*