[PATCH v9 3/5] misc: fastrpc: Remove kernel-side domain checks from capability ioctl

[Ling Xu]

Domain ID in the uAPI is misleading. Remove checks and log messages
related to 'domain' field in capability structure. Update UAPI to
mark the field as unused.

Signed-off-by: Ling Xu <quic_l...@quicinc.com>
---
 drivers/misc/fastrpc.c      | 14 +-------------
 include/uapi/misc/fastrpc.h |  2 +-
 2 files changed, 2 insertions(+), 14 deletions(-)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 378923594f02..495ac47e7f90 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -1723,7 +1723,6 @@ static int fastrpc_get_info_from_kernel(struct 
fastrpc_ioctl_capability *cap,
        uint32_t attribute_id = cap->attribute_id;
        uint32_t *dsp_attributes;
        unsigned long flags;
-       uint32_t domain = cap->domain;
        int err;
 
        spin_lock_irqsave(&cctx->lock, flags);
@@ -1741,7 +1740,7 @@ static int fastrpc_get_info_from_kernel(struct 
fastrpc_ioctl_capability *cap,
        err = fastrpc_get_info_from_dsp(fl, dsp_attributes, 
FASTRPC_MAX_DSP_ATTRIBUTES);
        if (err == DSP_UNSUPPORTED_API) {
                dev_info(&cctx->rpdev->dev,
-                        "Warning: DSP capabilities not supported on domain: 
%d\n", domain);
+                        "Warning: DSP capabilities not supported\n");
                kfree(dsp_attributes);
                return -EOPNOTSUPP;
        } else if (err) {
@@ -1769,17 +1768,6 @@ static int fastrpc_get_dsp_info(struct fastrpc_user *fl, 
char __user *argp)
                return  -EFAULT;
 
        cap.capability = 0;
-       if (cap.domain >= FASTRPC_DEV_MAX) {
-               dev_err(&fl->cctx->rpdev->dev, "Error: Invalid domain id:%d, 
err:%d\n",
-                       cap.domain, err);
-               return -ECHRNG;
-       }
-
-       /* Fastrpc Capablities does not support modem domain */
-       if (cap.domain == MDSP_DOMAIN_ID) {
-               dev_err(&fl->cctx->rpdev->dev, "Error: modem not supported 
%d\n", err);
-               return -ECHRNG;
-       }
 
        if (cap.attribute_id >= FASTRPC_MAX_DSP_ATTRIBUTES) {
                dev_err(&fl->cctx->rpdev->dev, "Error: invalid attribute: %d, 
err: %d\n",
diff --git a/include/uapi/misc/fastrpc.h b/include/uapi/misc/fastrpc.h
index f33d914d8f46..c6e2925f47e6 100644
--- a/include/uapi/misc/fastrpc.h
+++ b/include/uapi/misc/fastrpc.h
@@ -134,7 +134,7 @@ struct fastrpc_mem_unmap {
 };
 
 struct fastrpc_ioctl_capability {
-       __u32 domain;
+       __u32 unused; /* deprecated, ignored by the kernel */
        __u32 attribute_id;
        __u32 capability;   /* dsp capability */
        __u32 reserved[4];
-- 
2.34.1