patacongo commented on a change in pull request #4236:
URL: https://github.com/apache/incubator-nuttx/pull/4236#discussion_r677396508
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File path: drivers/wireless/ieee80211/bcm43xxx/bcmf_sdio.h
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@@ -110,13 +111,22 @@ struct bcmf_sdio_dev_s
/* Structure used to manage SDIO frames */
+struct __attribute__((packed)) bcmf_dma_buf
+{
+ uint8_t align_padding[CONFIG_IEEE80211_BROADCOM_SDIO_DMA_BUF_ALIGNMENT -
+ FIRST_WORD_SIZE];
+ uint8_t first_word[FIRST_WORD_SIZE];
+ uint8_t remaining_aligned_buf[HEADER_SIZE - FIRST_WORD_SIZE +
+ MAX_NETDEV_PKTSIZE + CONFIG_NET_GUARDSIZE];
+};
+
struct bcmf_sdio_frame
{
struct bcmf_frame_s header;
bool tx;
dq_entry_t list_entry;
- uint8_t data[HEADER_SIZE + MAX_NETDEV_PKTSIZE +
- CONFIG_NET_GUARDSIZE];
+ struct bcmf_dma_buf data
+ __attribute__((aligned(CONFIG_IEEE80211_BROADCOM_SDIO_DMA_BUF_ALIGNMENT)));
Review comment:
GCC attributes are forbidden in common code. This should not be merged
until this fixed. There are compiler-independent macros in
include/nuttx/compiler.h that should be used to make the alignment compiler
independent.
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