From patchwork Tue Jul 2 16:02:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nuno Sa via B4 Relay X-Patchwork-Id: 13719986 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 58A551B47D0; Tue, 2 Jul 2024 16:02:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719936159; cv=none; b=NHTJSJhKRF0rN55b4zzDLzpnO165XQhiH3/14Or4KdQsP4BPt0ljumFUmdCTPojfHzYQOu2ohz25i1KT/nIxBEFw05TmlTlCDYmRundtFfAZFDiTZH/5uBFUBeX1AgapFfME14gvGCIekcubBCbDyPfBwBM97cRxqDHtMUn1DpY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719936159; c=relaxed/simple; bh=H6knCmshjK5jGEsidqg9p/dgF02XphFvTsPHqzn4WQw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=d6gdui5iPeKfHXIuNCHYkmgw9qZP2BJgc7Ml+rFjVoELVpA92+KoxTzArmb5RPdbM0SJhKLrfVfjIZ+kGAwBNuHd8vGoqpLPIkqQ9i9O44/RZ/p1n9CQQqQAj9+SlFFn1XmIePWZmFq6D4SxM2etQP3wNIwVVs5d/Im8CEYd99o= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=B8ACQCOB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="B8ACQCOB" Received: by smtp.kernel.org (Postfix) with ESMTPS id 2D908C4AF0D; Tue, 2 Jul 2024 16:02:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1719936159; bh=H6knCmshjK5jGEsidqg9p/dgF02XphFvTsPHqzn4WQw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=B8ACQCOBSeXAMiWqKyyqtsTCs74VAAHr503UAPluDfd1+Ch9KQW1z4c7ILOQy72E+ qRT7aPuRAuLdaqchknQHgetoXFjBbhGS1cDXg6tc8uE//VsfwpdfRjVA1uegXLmhRr SZJ/r1jJjiJmX7EF80VUJIL/oJRRcqbcTWeJJxpBq6CkelmfK3GK3Smxlwg2baHKmk Q3X0DZeLJc21GI+YTzCZ2wP3gpDgHn1B4ZHyT04Ly5u6wcRJ6OvDu6iZeLmKlxlmSl 9nKGpc4oKhncgjOlgiFUYKXYP42H1QgIwqTcpeccj6KJlQQas1FwriZR1w4FvGoow/ U8v74wm39pdEA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F9B7C3065E; Tue, 2 Jul 2024 16:02:39 +0000 (UTC) From: Nuno Sa via B4 Relay Date: Tue, 02 Jul 2024 18:02:35 +0200 Subject: [PATCH 03/20] iio: buffer: make use of iio_get_masklength() Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240702-dev-iio-masklength-private-v1-3-98193bf536a6@analog.com> References: <20240702-dev-iio-masklength-private-v1-0-98193bf536a6@analog.com> In-Reply-To: <20240702-dev-iio-masklength-private-v1-0-98193bf536a6@analog.com> To: linux-iio@vger.kernel.org, chrome-platform@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: Jonathan Cameron , Lars-Peter Clausen , Cosmin Tanislav , Michael Hennerich , Benson Leung , Guenter Roeck , Dmitry Rokosov , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1719936156; l=8943; i=nuno.sa@analog.com; s=20231116; h=from:subject:message-id; bh=U7dr1egZgx9NyisqCoR3KT604oyD4R25bPaOlNgH5Bg=; b=GJ1AZCX6hZqMIVksHzM6CH1VBok4DW6f0RMeoXqxnKC2jOlLABH/eJIND/PEHVWvtyddGVxTV LjVguhviQOeA7/zdTDikSWTmyzmmqGOdJEPwuoReCfjpCo6L0VhKQYN X-Developer-Key: i=nuno.sa@analog.com; a=ed25519; pk=3NQwYA013OUYZsmDFBf8rmyyr5iQlxV/9H4/Df83o1E= X-Endpoint-Received: by B4 Relay for nuno.sa@analog.com/20231116 with auth_id=100 X-Original-From: Nuno Sa Reply-To: nuno.sa@analog.com From: Nuno Sa Use iio_get_masklength() to access '.masklength' so it can be annotated as __private when there are no more direct users of it. While at it, remove some unneeded line breaks. Signed-off-by: Nuno Sa Reviewed-by: Alexandru Ardelean --- drivers/iio/buffer/industrialio-buffer-cb.c | 2 +- drivers/iio/buffer/industrialio-hw-consumer.c | 4 +-- drivers/iio/industrialio-buffer.c | 50 ++++++++++++--------------- 3 files changed, 26 insertions(+), 30 deletions(-) diff --git a/drivers/iio/buffer/industrialio-buffer-cb.c b/drivers/iio/buffer/industrialio-buffer-cb.c index 4c12b7a94af59..4befc9f55201e 100644 --- a/drivers/iio/buffer/industrialio-buffer-cb.c +++ b/drivers/iio/buffer/industrialio-buffer-cb.c @@ -77,7 +77,7 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, } cb_buff->indio_dev = cb_buff->channels[0].indio_dev; - cb_buff->buffer.scan_mask = bitmap_zalloc(cb_buff->indio_dev->masklength, + cb_buff->buffer.scan_mask = bitmap_zalloc(iio_get_masklength(cb_buff->indio_dev), GFP_KERNEL); if (cb_buff->buffer.scan_mask == NULL) { ret = -ENOMEM; diff --git a/drivers/iio/buffer/industrialio-hw-consumer.c b/drivers/iio/buffer/industrialio-hw-consumer.c index fb58f599a80b1..526b2a8d725d1 100644 --- a/drivers/iio/buffer/industrialio-hw-consumer.c +++ b/drivers/iio/buffer/industrialio-hw-consumer.c @@ -52,6 +52,7 @@ static const struct iio_buffer_access_funcs iio_hw_buf_access = { static struct hw_consumer_buffer *iio_hw_consumer_get_buffer( struct iio_hw_consumer *hwc, struct iio_dev *indio_dev) { + unsigned int mask_longs = BITS_TO_LONGS(iio_get_masklength(indio_dev)); struct hw_consumer_buffer *buf; list_for_each_entry(buf, &hwc->buffers, head) { @@ -59,8 +60,7 @@ static struct hw_consumer_buffer *iio_hw_consumer_get_buffer( return buf; } - buf = kzalloc(struct_size(buf, scan_mask, BITS_TO_LONGS(indio_dev->masklength)), - GFP_KERNEL); + buf = kzalloc(struct_size(buf, scan_mask, mask_longs), GFP_KERNEL); if (!buf) return NULL; diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index 0138b21b244f0..389bfb238b510 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -473,18 +473,19 @@ static bool iio_validate_scan_mask(struct iio_dev *indio_dev, static int iio_scan_mask_set(struct iio_dev *indio_dev, struct iio_buffer *buffer, int bit) { + unsigned int masklength = iio_get_masklength(indio_dev); const unsigned long *mask; unsigned long *trialmask; - if (!indio_dev->masklength) { + if (!masklength) { WARN(1, "Trying to set scanmask prior to registering buffer\n"); return -EINVAL; } - trialmask = bitmap_alloc(indio_dev->masklength, GFP_KERNEL); + trialmask = bitmap_alloc(masklength, GFP_KERNEL); if (!trialmask) return -ENOMEM; - bitmap_copy(trialmask, buffer->scan_mask, indio_dev->masklength); + bitmap_copy(trialmask, buffer->scan_mask, masklength); set_bit(bit, trialmask); if (!iio_validate_scan_mask(indio_dev, trialmask)) @@ -492,12 +493,11 @@ static int iio_scan_mask_set(struct iio_dev *indio_dev, if (indio_dev->available_scan_masks) { mask = iio_scan_mask_match(indio_dev->available_scan_masks, - indio_dev->masklength, - trialmask, false); + masklength, trialmask, false); if (!mask) goto err_invalid_mask; } - bitmap_copy(buffer->scan_mask, trialmask, indio_dev->masklength); + bitmap_copy(buffer->scan_mask, trialmask, masklength); bitmap_free(trialmask); @@ -517,7 +517,7 @@ static int iio_scan_mask_clear(struct iio_buffer *buffer, int bit) static int iio_scan_mask_query(struct iio_dev *indio_dev, struct iio_buffer *buffer, int bit) { - if (bit > indio_dev->masklength) + if (bit > iio_get_masklength(indio_dev)) return -EINVAL; if (!buffer->scan_mask) @@ -733,8 +733,7 @@ static int iio_compute_scan_bytes(struct iio_dev *indio_dev, int length, i, largest = 0; /* How much space will the demuxed element take? */ - for_each_set_bit(i, mask, - indio_dev->masklength) { + for_each_set_bit(i, mask, iio_get_masklength(indio_dev)) { length = iio_storage_bytes_for_si(indio_dev, i); if (length < 0) return length; @@ -855,6 +854,7 @@ static int iio_verify_update(struct iio_dev *indio_dev, struct iio_device_config *config) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); + unsigned int masklength = iio_get_masklength(indio_dev); unsigned long *compound_mask; const unsigned long *scan_mask; bool strict_scanmask = false; @@ -863,7 +863,7 @@ static int iio_verify_update(struct iio_dev *indio_dev, unsigned int modes; if (insert_buffer && - bitmap_empty(insert_buffer->scan_mask, indio_dev->masklength)) { + bitmap_empty(insert_buffer->scan_mask, masklength)) { dev_dbg(&indio_dev->dev, "At least one scan element must be enabled first\n"); return -EINVAL; @@ -917,7 +917,7 @@ static int iio_verify_update(struct iio_dev *indio_dev, } /* What scan mask do we actually have? */ - compound_mask = bitmap_zalloc(indio_dev->masklength, GFP_KERNEL); + compound_mask = bitmap_zalloc(masklength, GFP_KERNEL); if (!compound_mask) return -ENOMEM; @@ -927,20 +927,19 @@ static int iio_verify_update(struct iio_dev *indio_dev, if (buffer == remove_buffer) continue; bitmap_or(compound_mask, compound_mask, buffer->scan_mask, - indio_dev->masklength); + masklength); scan_timestamp |= buffer->scan_timestamp; } if (insert_buffer) { bitmap_or(compound_mask, compound_mask, - insert_buffer->scan_mask, indio_dev->masklength); + insert_buffer->scan_mask, masklength); scan_timestamp |= insert_buffer->scan_timestamp; } if (indio_dev->available_scan_masks) { scan_mask = iio_scan_mask_match(indio_dev->available_scan_masks, - indio_dev->masklength, - compound_mask, + masklength, compound_mask, strict_scanmask); bitmap_free(compound_mask); if (!scan_mask) @@ -1005,6 +1004,7 @@ static int iio_buffer_add_demux(struct iio_buffer *buffer, static int iio_buffer_update_demux(struct iio_dev *indio_dev, struct iio_buffer *buffer) { + unsigned int masklength = iio_get_masklength(indio_dev); int ret, in_ind = -1, out_ind, length; unsigned int in_loc = 0, out_loc = 0; struct iio_demux_table *p = NULL; @@ -1016,17 +1016,13 @@ static int iio_buffer_update_demux(struct iio_dev *indio_dev, /* First work out which scan mode we will actually have */ if (bitmap_equal(indio_dev->active_scan_mask, - buffer->scan_mask, - indio_dev->masklength)) + buffer->scan_mask, masklength)) return 0; /* Now we have the two masks, work from least sig and build up sizes */ - for_each_set_bit(out_ind, - buffer->scan_mask, - indio_dev->masklength) { + for_each_set_bit(out_ind, buffer->scan_mask, masklength) { in_ind = find_next_bit(indio_dev->active_scan_mask, - indio_dev->masklength, - in_ind + 1); + masklength, in_ind + 1); while (in_ind != out_ind) { ret = iio_storage_bytes_for_si(indio_dev, in_ind); if (ret < 0) @@ -1036,8 +1032,7 @@ static int iio_buffer_update_demux(struct iio_dev *indio_dev, /* Make sure we are aligned */ in_loc = roundup(in_loc, length) + length; in_ind = find_next_bit(indio_dev->active_scan_mask, - indio_dev->masklength, - in_ind + 1); + masklength, in_ind + 1); } ret = iio_storage_bytes_for_si(indio_dev, in_ind); if (ret < 0) @@ -1646,6 +1641,7 @@ static int __iio_buffer_alloc_sysfs_and_mask(struct iio_buffer *buffer, int index) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); + unsigned int masklength = iio_get_masklength(indio_dev); struct iio_dev_attr *p; const struct iio_dev_attr *id_attr; struct attribute **attr; @@ -1708,8 +1704,8 @@ static int __iio_buffer_alloc_sysfs_and_mask(struct iio_buffer *buffer, iio_dev_opaque->scan_index_timestamp = channels[i].scan_index; } - if (indio_dev->masklength && !buffer->scan_mask) { - buffer->scan_mask = bitmap_zalloc(indio_dev->masklength, + if (masklength && !buffer->scan_mask) { + buffer->scan_mask = bitmap_zalloc(masklength, GFP_KERNEL); if (!buffer->scan_mask) { ret = -ENOMEM; @@ -1879,7 +1875,7 @@ void iio_buffers_free_sysfs_and_mask(struct iio_dev *indio_dev) bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev, const unsigned long *mask) { - return bitmap_weight(mask, indio_dev->masklength) == 1; + return bitmap_weight(mask, iio_get_masklength(indio_dev)) == 1; } EXPORT_SYMBOL_GPL(iio_validate_scan_mask_onehot);