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firmware: arm_scpi: silence sparse warnings

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At several positions in the code sparse complains about incorrect access
to __iomem annotated memory. Fix this and make sparse happy.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Heiner Kallweit 2017-10-06 20:59:05 +02:00 committed by Sudeep Holla
parent 48bee74a35
commit 430594c1c7
1 changed files with 9 additions and 8 deletions
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17
drivers/firmware/arm_scpi.c
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@ -405,19 +405,20 @@ static void scpi_process_cmd(struct scpi_chan *ch, u32 cmd)
unsigned int len; unsigned int len;
if (scpi_info->is_legacy) { if (scpi_info->is_legacy) {
struct legacy_scpi_shared_mem *mem = ch->rx_payload; struct legacy_scpi_shared_mem __iomem *mem =
ch->rx_payload;
/* RX Length is not replied by the legacy Firmware */ /* RX Length is not replied by the legacy Firmware */
len = match->rx_len; len = match->rx_len;
match->status = le32_to_cpu(mem->status); match->status = ioread32(&mem->status);
memcpy_fromio(match->rx_buf, mem->payload, len); memcpy_fromio(match->rx_buf, mem->payload, len);
} else { } else {
struct scpi_shared_mem *mem = ch->rx_payload; struct scpi_shared_mem __iomem *mem = ch->rx_payload;
len = min(match->rx_len, CMD_SIZE(cmd)); len = min(match->rx_len, CMD_SIZE(cmd));
match->status = le32_to_cpu(mem->status); match->status = ioread32(&mem->status);
memcpy_fromio(match->rx_buf, mem->payload, len); memcpy_fromio(match->rx_buf, mem->payload, len);
} }
@ -431,11 +432,11 @@ static void scpi_process_cmd(struct scpi_chan *ch, u32 cmd)
static void scpi_handle_remote_msg(struct mbox_client *c, void *msg) static void scpi_handle_remote_msg(struct mbox_client *c, void *msg)
{ {
struct scpi_chan *ch = container_of(c, struct scpi_chan, cl); struct scpi_chan *ch = container_of(c, struct scpi_chan, cl);
struct scpi_shared_mem *mem = ch->rx_payload; struct scpi_shared_mem __iomem *mem = ch->rx_payload;
u32 cmd = 0; u32 cmd = 0;
if (!scpi_info->is_legacy) if (!scpi_info->is_legacy)
cmd = le32_to_cpu(mem->command); cmd = ioread32(&mem->command);
scpi_process_cmd(ch, cmd); scpi_process_cmd(ch, cmd);
} }
@ -445,7 +446,7 @@ static void scpi_tx_prepare(struct mbox_client *c, void *msg)
unsigned long flags; unsigned long flags;
struct scpi_xfer *t = msg; struct scpi_xfer *t = msg;
struct scpi_chan *ch = container_of(c, struct scpi_chan, cl); struct scpi_chan *ch = container_of(c, struct scpi_chan, cl);
struct scpi_shared_mem *mem = ch->tx_payload; struct scpi_shared_mem __iomem *mem = ch->tx_payload;
if (t->tx_buf) { if (t->tx_buf) {
if (scpi_info->is_legacy) if (scpi_info->is_legacy)
@ -464,7 +465,7 @@ static void scpi_tx_prepare(struct mbox_client *c, void *msg)
} }
if (!scpi_info->is_legacy) if (!scpi_info->is_legacy)
mem->command = cpu_to_le32(t->cmd); iowrite32(t->cmd, &mem->command);
} }
static struct scpi_xfer *get_scpi_xfer(struct scpi_chan *ch) static struct scpi_xfer *get_scpi_xfer(struct scpi_chan *ch)