diff options
Diffstat (limited to 'arch/arm/mach-tegra/ivc.c')
| -rw-r--r-- | arch/arm/mach-tegra/ivc.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/arch/arm/mach-tegra/ivc.c b/arch/arm/mach-tegra/ivc.c index e7c6d78744..b69a458fdf 100644 --- a/arch/arm/mach-tegra/ivc.c +++ b/arch/arm/mach-tegra/ivc.c @@ -124,11 +124,11 @@ static inline int tegra_ivc_channel_empty(struct tegra_ivc *ivc, { /* * This function performs multiple checks on the same values with - * security implications, so create snapshots with ACCESS_ONCE() to + * security implications, so create snapshots with READ_ONCE() to * ensure that these checks use the same values. */ - uint32_t w_count = ACCESS_ONCE(ch->w_count); - uint32_t r_count = ACCESS_ONCE(ch->r_count); + uint32_t w_count = READ_ONCE(ch->w_count); + uint32_t r_count = READ_ONCE(ch->r_count); /* * Perform an over-full check to prevent denial of service attacks where @@ -153,14 +153,14 @@ static inline int tegra_ivc_channel_full(struct tegra_ivc *ivc, * Invalid cases where the counters indicate that the queue is over * capacity also appear full. */ - return (ACCESS_ONCE(ch->w_count) - ACCESS_ONCE(ch->r_count)) >= + return (READ_ONCE(ch->w_count) - READ_ONCE(ch->r_count)) >= ivc->nframes; } static inline void tegra_ivc_advance_rx(struct tegra_ivc *ivc) { - ACCESS_ONCE(ivc->rx_channel->r_count) = - ACCESS_ONCE(ivc->rx_channel->r_count) + 1; + WRITE_ONCE(ivc->rx_channel->r_count, + READ_ONCE(ivc->rx_channel->r_count) + 1); if (ivc->r_pos == ivc->nframes - 1) ivc->r_pos = 0; @@ -170,8 +170,8 @@ static inline void tegra_ivc_advance_rx(struct tegra_ivc *ivc) static inline void tegra_ivc_advance_tx(struct tegra_ivc *ivc) { - ACCESS_ONCE(ivc->tx_channel->w_count) = - ACCESS_ONCE(ivc->tx_channel->w_count) + 1; + WRITE_ONCE(ivc->tx_channel->w_count, + READ_ONCE(ivc->tx_channel->w_count) + 1); if (ivc->w_pos == ivc->nframes - 1) ivc->w_pos = 0; @@ -232,7 +232,7 @@ static inline uint32_t tegra_ivc_channel_avail_count(struct tegra_ivc *ivc, * comment in tegra_ivc_channel_empty() for an explanation about * special over-full considerations. */ - return ACCESS_ONCE(ch->w_count) - ACCESS_ONCE(ch->r_count); + return READ_ONCE(ch->w_count) - READ_ONCE(ch->r_count); } int tegra_ivc_read_get_next_frame(struct tegra_ivc *ivc, void **frame) @@ -358,7 +358,7 @@ int tegra_ivc_channel_notified(struct tegra_ivc *ivc) /* Copy the receiver's state out of shared memory. */ offset = offsetof(struct tegra_ivc_channel_header, w_count); tegra_ivc_invalidate_counter(ivc, ivc->rx_channel, offset); - peer_state = ACCESS_ONCE(ivc->rx_channel->state); + peer_state = READ_ONCE(ivc->rx_channel->state); if (peer_state == ivc_state_sync) { /* |